=== modified file 'src/sp-filter.cpp'
--- src/sp-filter.cpp	2015-04-26 09:44:42 +0000
+++ src/sp-filter.cpp	2015-05-03 21:07:11 +0000
@@ -79,6 +79,7 @@
     this->readAttr( "height" );
     this->readAttr( "filterRes" );
     this->readAttr( "xlink:href" );
+    this->_refcount = 0;
 
 	SPObject::build(document, repr);
 
@@ -190,6 +191,15 @@
     }
 }
 
+
+/**
+ * Returns the number of references to the filter.
+ */
+guint SPFilter::getRefCount() {
+	// NOTE: this is currently updated by sp_style_filter_ref_changed() in style.cpp
+	return _refcount;
+}
+
 /**
  * Receives update notifications.
  */

=== modified file 'src/sp-filter.h'
--- src/sp-filter.h	2014-10-08 02:22:03 +0000
+++ src/sp-filter.h	2015-05-03 21:04:04 +0000
@@ -54,6 +54,9 @@
     NumberOptNumber filterRes;
     SPFilterReference *href;
     sigc::connection modified_connection;
+    
+    guint getRefCount();
+    guint _refcount;
 
     Inkscape::Filters::Filter *_renderer;
 

=== modified file 'src/style.cpp'
--- src/style.cpp	2015-05-04 10:57:06 +0000
+++ src/style.cpp	2015-05-04 16:17:32 +0000
@@ -1177,10 +1177,12 @@
 sp_style_filter_ref_changed(SPObject *old_ref, SPObject *ref, SPStyle *style)
 {
     if (old_ref) {
+        (dynamic_cast<SPFilter *>( old_ref ))->_refcount--;
         style->filter_modified_connection.disconnect();
     }
     if ( SP_IS_FILTER(ref))
     {
+       (dynamic_cast<SPFilter *>( ref ))->_refcount++;
         style->filter_modified_connection =
            ref->connectModified(sigc::bind(sigc::ptr_fun(&sp_style_filter_ref_modified), style));
     }

=== modified file 'src/ui/dialog/filter-effects-dialog.cpp'
--- src/ui/dialog/filter-effects-dialog.cpp	2015-04-26 09:46:39 +0000
+++ src/ui/dialog/filter-effects-dialog.cpp	2015-05-04 17:52:37 +0000
@@ -1360,8 +1361,15 @@
     ((Gtk::CellRendererText*)_list.get_column(1)->get_first_cell())->
         signal_edited().connect(sigc::mem_fun(*this, &FilterEffectsDialog::FilterModifier::on_name_edited));
 
+    _list.append_column("#", _columns.count);
+    _list.get_column(2)->set_sizing(Gtk::TREE_VIEW_COLUMN_AUTOSIZE);
+    _list.get_column(2)->set_expand(false);
+
     sw->set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
     _list.get_column(1)->set_resizable(true);
+    _list.get_column(1)->set_sizing(Gtk::TREE_VIEW_COLUMN_FIXED);
+    _list.get_column(1)->set_expand(true);
+    
     _list.set_reorderable(true);
     _list.enable_model_drag_dest (Gdk::ACTION_MOVE);
 
@@ -1494,6 +1502,7 @@
             (*iter)[_columns.sel] = 0;
         }
     }
+    update_counts();
 }
 
 void FilterEffectsDialog::FilterModifier::on_filter_selection_changed()
@@ -1565,6 +1574,15 @@
     }
 }
 
+
+void FilterEffectsDialog::FilterModifier::update_counts()
+{    
+    for(Gtk::TreeModel::iterator i = _model->children().begin(); i != _model->children().end(); ++i) {
+        SPFilter* f = SP_FILTER((*i)[_columns.filter]);
+        (*i)[_columns.count] = f->getRefCount();
+        }
+}
+
 /* Add all filters in the document to the combobox.
    Keeps the same selection if possible, otherwise selects the first element */
 void FilterEffectsDialog::FilterModifier::update_filters()
@@ -2752,20 +2769,22 @@
     Gtk::ScrolledWindow* sw_infobox = Gtk::manage(new Gtk::ScrolledWindow);
     Gtk::HBox* infobox = Gtk::manage(new Gtk::HBox(/*homogeneous:*/false, /*spacing:*/4));
     Gtk::HBox* hb_prims = Gtk::manage(new Gtk::HBox);
+    Gtk::VBox* vb_prims = Gtk::manage(new Gtk::VBox);
 
     _getContents()->add(*hpaned);
     hpaned->pack1(_filter_modifier);
     hpaned->pack2(_primitive_box);
     _primitive_box.pack_start(*sw_prims);
-    _primitive_box.pack_start(*hb_prims, false, false);
     _primitive_box.pack_start(*sw_infobox, false, false);
     sw_prims->add(_primitive_list);
-    sw_infobox->add(*infobox);
+    sw_infobox->add(*vb_prims);
     infobox->pack_start(_infobox_icon, false, false);
     infobox->pack_start(_infobox_desc, false, false);
     _infobox_desc.set_line_wrap(true);
-    _infobox_desc.set_size_request(200, -1);
+    _infobox_desc.set_size_request(250, -1);
 
+    vb_prims->pack_start(*hb_prims);
+    vb_prims->pack_start(*infobox);
 
     hb_prims->pack_start(_add_primitive, false, false);
     hb_prims->pack_start(_add_primitive_type, false, false);
=== modified file 'src/ui/dialog/filter-effects-dialog.h'
--- src/ui/dialog/filter-effects-dialog.h	2014-03-27 01:33:44 +0000
+++ src/ui/dialog/filter-effects-dialog.h	2015-05-04 17:51:02 +0000
@@ -69,11 +70,13 @@
                 add(filter);
                 add(label);
                 add(sel);
+                add(count);
             }
 
             Gtk::TreeModelColumn<SPFilter*> filter;
             Gtk::TreeModelColumn<Glib::ustring> label;
             Gtk::TreeModelColumn<int> sel;
+            Gtk::TreeModelColumn<int> count;
         };
 
         void setTargetDesktop(SPDesktop *desktop);
@@ -89,6 +92,7 @@
         bool on_filter_move(const Glib::RefPtr<Gdk::DragContext>& /*context*/, int x, int y, guint /*time*/);
         void on_selection_toggled(const Glib::ustring&);
 
+        void update_counts();
         void update_filters();
         void filter_list_button_release(GdkEventButton*);
         void add_filter();