Comment for future sanity.

Essentials/src/com/earth2me/essentials/signs/SignPlayerListener.java

@@ -21,6 +21,11 @@ public class SignPlayerListener implements Listener
 		this.ess = ess;
 	}
 
+	//This following code below listens to cancelled events to fix a bukkit issue
+	//Right clicking signs with a block in hand, can now fire cancelled events.
+	//This is because when the block place is cancelled (for example not enough space for the block to be placed),
+	//the event will be marked as cancelled, thus preventing 30% of sign purchases.
+	
 	@EventHandler(priority = EventPriority.LOW)
 	public void onPlayerInteract(final PlayerInteractEvent event)
 	{