diff --git a/src/main/java/fr/moribus/imageonmap/ImageOnMap.java b/src/main/java/fr/moribus/imageonmap/ImageOnMap.java
index 32a4b2d..bc3a0de 100644
--- a/src/main/java/fr/moribus/imageonmap/ImageOnMap.java
+++ b/src/main/java/fr/moribus/imageonmap/ImageOnMap.java
@@ -29,13 +29,16 @@ import org.bukkit.plugin.java.JavaPlugin;
 public final class ImageOnMap extends JavaPlugin
 {
     static private final String IMAGES_DIRECTORY_NAME = "images";
+    static private final String MAPS_DIRECTORY_NAME = "maps";
     static private ImageOnMap plugin;
     
     private final File imagesDirectory;
+    private final File mapsDirectory;
 
     public ImageOnMap()
     {
         imagesDirectory = new File(this.getDataFolder(), IMAGES_DIRECTORY_NAME);
+        mapsDirectory = new File(this.getDataFolder(), MAPS_DIRECTORY_NAME);
         plugin = this;
     }
 
@@ -45,6 +48,7 @@ public final class ImageOnMap extends JavaPlugin
     }
     
     public File getImagesDirectory() {return imagesDirectory;}
+    public File getMapsDirectory() {return mapsDirectory;}
     public File getImageFile(short mapID)
     {
         return new File(imagesDirectory, "map"+mapID+".png");
@@ -63,6 +67,16 @@ public final class ImageOnMap extends JavaPlugin
                 return;
             }
         }
+        
+        if(!mapsDirectory.exists())
+        {
+            if(!mapsDirectory.mkdirs())
+            {
+                PluginLogger.LogError("FATAL : Could not create the images directory.", null);
+                this.setEnabled(false);
+                return;
+            }
+        }
          
         //Init all the things !
         MetricsLite.startMetrics();
diff --git a/src/main/java/fr/moribus/imageonmap/map/ImageMap.java b/src/main/java/fr/moribus/imageonmap/map/ImageMap.java
index d75a5c0..000346f 100644
--- a/src/main/java/fr/moribus/imageonmap/map/ImageMap.java
+++ b/src/main/java/fr/moribus/imageonmap/map/ImageMap.java
@@ -21,19 +21,27 @@ package fr.moribus.imageonmap.map;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.UUID;
+import org.bukkit.configuration.InvalidConfigurationException;
 import org.bukkit.configuration.serialization.ConfigurationSerializable;
 
 public abstract class ImageMap implements ConfigurationSerializable
 {
+    static public enum Type 
+    {
+        SINGLE, POSTER;
+    };
+    
     static public final int WIDTH = 128;
     static public final int HEIGHT = 128;
     
     private final UUID userUUID;
+    private final Type mapType;
     private String imageName;
     
-    protected ImageMap(UUID userUUID)
+    protected ImageMap(UUID userUUID, Type mapType)
     {
         this.userUUID = userUUID;
+        this.mapType = mapType;
     }
     
     
@@ -42,17 +50,30 @@ public abstract class ImageMap implements ConfigurationSerializable
     
     /* ====== Serialization methods ====== */
     
-    protected ImageMap(Map<String, Object> map, UUID userUUID) throws IllegalArgumentException
+    static public ImageMap fromConfig(Map<String, Object> map, UUID userUUID) throws InvalidConfigurationException
     {
+        Type mapType;
         try
         {
-            this.userUUID = userUUID;
-            this.imageName = (String) map.get("name");
+            mapType = Type.valueOf((String) map.get("type"));
         }
         catch(ClassCastException ex)
         {
-            throw new IllegalArgumentException(ex);
+            throw new InvalidConfigurationException(ex);
         }
+        
+        switch(mapType)
+        {
+            case SINGLE: return new SingleMap(map, userUUID);
+            case POSTER: return new PosterMap(map, userUUID);
+            default: throw new IllegalArgumentException("Unhandled map type given");
+        }
+    }
+    
+    protected ImageMap(Map<String, Object> map, UUID userUUID, Type mapType) throws InvalidConfigurationException
+    {
+        this(userUUID, mapType);
+        this.imageName = getFieldValue(map, "name");
     }
     
     protected abstract void postSerialize(Map<String, Object> map);
@@ -61,9 +82,22 @@ public abstract class ImageMap implements ConfigurationSerializable
     public Map<String, Object> serialize()
     {
         Map<String, Object> map = new HashMap<String, Object>();
+        map.put("type", mapType.toString());
         map.put("name", imageName);
         return map;
     }
+    
+    static protected <T> T getFieldValue(Map<String, Object> map, String fieldName) throws InvalidConfigurationException
+    {
+        try
+        {
+            return (T)map.get(fieldName);
+        }
+        catch(ClassCastException ex)
+        {
+            throw new InvalidConfigurationException("Invalid field \"" + fieldName + "\"", ex);
+        }
+    }
 
     
     /* ====== Getters & Setters ====== */
diff --git a/src/main/java/fr/moribus/imageonmap/map/MapManager.java b/src/main/java/fr/moribus/imageonmap/map/MapManager.java
index ed7284e..2f5128d 100644
--- a/src/main/java/fr/moribus/imageonmap/map/MapManager.java
+++ b/src/main/java/fr/moribus/imageonmap/map/MapManager.java
@@ -18,12 +18,17 @@
 
 package fr.moribus.imageonmap.map;
 
+import fr.moribus.imageonmap.ImageOnMap;
 import java.util.ArrayList;
 import java.util.UUID;
+import org.bukkit.Bukkit;
+import org.bukkit.scheduler.BukkitTask;
 
 abstract public class MapManager 
 {
-    static private final ArrayList<PlayerMapStore> playerMaps = new ArrayList<PlayerMapStore>();;
+    static private final long SAVE_DELAY = 200;
+    static private final ArrayList<PlayerMapStore> playerMaps = new ArrayList<PlayerMapStore>();
+    static private BukkitTask autosaveTask;
     
     static public void init()
     {
@@ -33,6 +38,8 @@ abstract public class MapManager
     static public void exit()
     {
         playerMaps.clear();
+        save();
+        if(autosaveTask != null) autosaveTask.cancel();
     }
     
     static public boolean managesMap(short mapID)
@@ -47,6 +54,24 @@ abstract public class MapManager
         return false;
     }
     
+    static public void notifyModification(UUID playerUUID)
+    {
+        getPlayerMapStore(playerUUID).notifyModification();
+        if(autosaveTask == null) 
+            Bukkit.getScheduler().runTaskLater(ImageOnMap.getPlugin(), new AutosaveRunnable(), SAVE_DELAY);
+    }
+    
+    static public void save()
+    {
+        synchronized(playerMaps)
+        {
+            for(PlayerMapStore tStore : playerMaps)
+            {
+                tStore.saveMapsFile();
+            }
+        }
+    }
+    
     static private PlayerMapStore getPlayerMapStore(UUID playerUUID)
     {
         PlayerMapStore store = getExistingPlayerMapStore(playerUUID);
@@ -69,4 +94,21 @@ abstract public class MapManager
         }
         return null;
     }
+    
+    static private class AutosaveRunnable implements Runnable
+    {
+        @Override
+        public void run() 
+        {
+            synchronized(playerMaps)
+            {
+                for(PlayerMapStore toolStore : playerMaps)
+                {
+                    if(toolStore.isModified()) toolStore.saveMapsFile();
+                }
+                autosaveTask = null;
+            }
+        }
+        
+    }
 }
diff --git a/src/main/java/fr/moribus/imageonmap/map/PlayerMapStore.java b/src/main/java/fr/moribus/imageonmap/map/PlayerMapStore.java
index 74da0aa..5ccad9e 100644
--- a/src/main/java/fr/moribus/imageonmap/map/PlayerMapStore.java
+++ b/src/main/java/fr/moribus/imageonmap/map/PlayerMapStore.java
@@ -18,17 +18,31 @@
 
 package fr.moribus.imageonmap.map;
 
+import fr.moribus.imageonmap.ImageOnMap;
+import fr.moribus.imageonmap.PluginLogger;
+import java.io.File;
+import java.io.IOException;
 import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 import java.util.UUID;
+import org.bukkit.configuration.ConfigurationSection;
+import org.bukkit.configuration.InvalidConfigurationException;
+import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.configuration.serialization.ConfigurationSerializable;
 
-public class PlayerMapStore 
+public class PlayerMapStore implements ConfigurationSerializable
 {
     private final UUID playerUUID;
     private final ArrayList<ImageMap> mapList = new ArrayList<ImageMap>();
+    private boolean modified = false;
     
     public PlayerMapStore(UUID playerUUID)
     {
         this.playerUUID = playerUUID;
+        loadMapsFile();
     }
     
     public boolean managesMap(short mapID)
@@ -46,4 +60,91 @@ public class PlayerMapStore
     {
         return playerUUID;
     }
+    
+    public boolean isModified()
+    {
+        return modified;
+    }
+    
+    public void notifyModification()
+    {
+        this.modified = true;
+    }
+    
+    /* ****** Serializing ***** */
+    
+    @Override
+    public Map<String, Object> serialize() 
+    {
+        Map<String, Object> map = new HashMap<String, Object>();
+        ArrayList<Map> list = new ArrayList<Map>();
+        synchronized(mapList)
+        {
+            for(ImageMap tMap : mapList)
+            {
+                list.add(tMap.serialize());
+            }
+        }
+        map.put("mapList", list);
+        return map;
+    }
+    
+    private void loadFromConfig(ConfigurationSection section)
+    {
+        if(section == null) return;
+        List<Map<String, Object>> list = (List<Map<String, Object>>) section.getList("mapList");
+        if(list == null) return;
+        synchronized(mapList)
+        {
+            for(Map<String, Object> tMap : list)
+            {
+                try
+                {
+                    mapList.add(ImageMap.fromConfig(tMap, playerUUID));
+                }
+                catch(InvalidConfigurationException ex)
+                {
+                    PluginLogger.LogWarning("Could not load map data", ex);
+                }
+            }
+        }
+    }
+    
+    /* ****** Configuration Files management ***** */
+    
+    private FileConfiguration mapConfig = null;
+    private File mapsFile = null;
+    
+    private FileConfiguration getToolConfig()
+    {
+        if(mapConfig == null) loadMapsFile();
+        
+        return mapConfig;
+    }
+    
+    private void loadMapsFile()
+    {
+        if(mapsFile == null)
+        {
+            mapsFile = new File(ImageOnMap.getPlugin().getMapsDirectory(), playerUUID.toString() + ".yml");
+            if(!mapsFile.exists()) saveMapsFile();
+        }
+        mapConfig = YamlConfiguration.loadConfiguration(mapsFile);
+        loadFromConfig(getToolConfig().getConfigurationSection("PlayerMapStore"));
+    }
+    
+    public void saveMapsFile()
+    {
+        if(mapsFile == null || mapConfig == null) return;
+        getToolConfig().set("PlayerMapStore", this.serialize());
+        try 
+        {
+            getToolConfig().save(mapsFile);
+        } 
+        catch (IOException ex) 
+        {
+            PluginLogger.LogError("Could not save maps file for player " + playerUUID.toString(), ex);
+        }
+        modified = false;
+    }
 }
diff --git a/src/main/java/fr/moribus/imageonmap/map/PosterMap.java b/src/main/java/fr/moribus/imageonmap/map/PosterMap.java
index abfd432..2627bee 100644
--- a/src/main/java/fr/moribus/imageonmap/map/PosterMap.java
+++ b/src/main/java/fr/moribus/imageonmap/map/PosterMap.java
@@ -20,6 +20,7 @@ package fr.moribus.imageonmap.map;
 
 import java.util.Map;
 import java.util.UUID;
+import org.bukkit.configuration.InvalidConfigurationException;
 
 public class PosterMap extends ImageMap
 {
@@ -29,7 +30,7 @@ public class PosterMap extends ImageMap
     
     public PosterMap(UUID userUUID, short[] mapsIDs, int columnCount, int rowCount)
     {
-        super(userUUID);
+        super(userUUID, Type.POSTER);
         this.mapsIDs = mapsIDs;
         this.columnCount = columnCount;
         this.rowCount = rowCount;
@@ -52,6 +53,17 @@ public class PosterMap extends ImageMap
         return false;
     }
 
+    /* ====== Serialization methods ====== */
+    
+    public PosterMap(Map<String, Object> map, UUID userUUID) throws InvalidConfigurationException
+    {
+        super(map, userUUID, Type.POSTER);
+        
+        columnCount = getFieldValue(map, "columns");
+        rowCount = getFieldValue(map, "rows");
+        mapsIDs = getFieldValue(map, "mapIDs");
+    }
+    
     @Override
     protected void postSerialize(Map<String, Object> map)
     {
diff --git a/src/main/java/fr/moribus/imageonmap/map/SingleMap.java b/src/main/java/fr/moribus/imageonmap/map/SingleMap.java
index 5410115..648279b 100644
--- a/src/main/java/fr/moribus/imageonmap/map/SingleMap.java
+++ b/src/main/java/fr/moribus/imageonmap/map/SingleMap.java
@@ -20,6 +20,7 @@ package fr.moribus.imageonmap.map;
 
 import java.util.Map;
 import java.util.UUID;
+import org.bukkit.configuration.InvalidConfigurationException;
 
 public class SingleMap extends ImageMap
 {
@@ -27,7 +28,7 @@ public class SingleMap extends ImageMap
     
     public SingleMap(UUID ownerUUID, short mapID)
     {
-        super(ownerUUID);
+        super(ownerUUID, Type.SINGLE);
         this.mapID = mapID;
     }
     
@@ -42,7 +43,15 @@ public class SingleMap extends ImageMap
     {
         return this.mapID == mapID;
     }
-
+    
+    /* ====== Serialization methods ====== */
+    
+    public SingleMap(Map<String, Object> map, UUID userUUID) throws InvalidConfigurationException
+    {
+        super(map, userUUID, Type.SINGLE);
+        mapID = getFieldValue(map, "mapID");
+    }
+    
     @Override
     protected void postSerialize(Map<String, Object> map)
     {