diff --git a/src/main/java/org/gcube/portlets/user/workspace/client/view/sharing/multisuggest/MultiDragContact.java b/src/main/java/org/gcube/portlets/user/workspace/client/view/sharing/multisuggest/MultiDragContact.java
index df7fcba..a33a238 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/client/view/sharing/multisuggest/MultiDragContact.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/client/view/sharing/multisuggest/MultiDragContact.java
@@ -38,6 +38,7 @@ import com.extjs.gxt.ui.client.widget.grid.GridCellRenderer;
 import com.extjs.gxt.ui.client.widget.layout.FitLayout;
 import com.extjs.gxt.ui.client.widget.layout.RowData;
 import com.extjs.gxt.ui.client.widget.layout.RowLayout;
+import com.extjs.gxt.ui.client.widget.tips.QuickTip;
 import com.extjs.gxt.ui.client.widget.toolbar.ToolBar;
   
 public class MultiDragContact extends Dialog {  
@@ -49,6 +50,7 @@ public class MultiDragContact extends Dialog {
   private TextArea textAreaAlreadyShared;
   private Grid<ExtendedInfoContactModel> gridAllContacts;
   private Grid<ExtendedInfoContactModel> gridShareWith;
+  private ColumnConfig columnConfigDisplayName;
  
   public MultiDragContact() {
 	setStyleAttribute("margin", "10px");   
@@ -123,8 +125,27 @@ public class MultiDragContact extends Dialog {
     VerticalPanel vp = new VerticalPanel();
     vp.setHorizontalAlign(HorizontalAlignment.CENTER);
     vp.add(new Label("All Contacts"));
+    
     gridAllContacts = new Grid<ExtendedInfoContactModel>(storeSource, createColumnModel());
     
+    
+    GridCellRenderer<ExtendedInfoContactModel> displayNameCellRender = new GridCellRenderer<ExtendedInfoContactModel>() {  
+        public String render(ExtendedInfoContactModel model, String property, ColumnData config, int rowIndex, int colIndex, ListStore<ExtendedInfoContactModel> store, Grid<ExtendedInfoContactModel> grid) {  
+        
+        	if(model!=null){
+        		
+		        String value = model.get (property);
+		        if (value != null){
+		            return "<span qtitle='' qtip='" + model.getLogin() +"'>" + value + "</span>";  
+		        }
+        	}
+        	
+        	return "";
+       }  
+    };  
+    
+    columnConfigDisplayName.setRenderer(displayNameCellRender);
+    
     storeSource.setDefaultSort(InfoContactModel.FULLNAME, SortDir.ASC);
     storeSource.sort(InfoContactModel.FULLNAME, SortDir.ASC);
     
@@ -244,7 +265,11 @@ public class MultiDragContact extends Dialog {
 		public void componentSelected(ButtonEvent ce) {
 				hide();
 		}
-	});   
+	});  
+    
+    // needed to enable quicktips (qtitle for the heading and qtip for the  
+    // content) that are setup in the change GridCellRenderer  
+    new QuickTip(gridAllContacts);
   }  
   
   private ColumnModel createColumnModel() {  
@@ -253,8 +278,8 @@ public class MultiDragContact extends Dialog {
     ColumnConfig icon = new ColumnConfig(ExtendedInfoContactModel.ICON, "", 25);
     configs.add(icon);  
     
-    ColumnConfig columnName = new ColumnConfig(ExtendedInfoContactModel.FULLNAME, "Name", 150);  
-    configs.add(columnName);  
+    columnConfigDisplayName = new ColumnConfig(ExtendedInfoContactModel.FULLNAME, "Name", 150);  
+    configs.add(columnConfigDisplayName);  
     
 	ColumnConfig type = new ColumnConfig(ExtendedInfoContactModel.ISGROUP, "Type", 50);
     configs.add(type);