diff -r a7efd386872a -r d18d6b9e1078 src/widgets/Polemic.js
--- a/src/widgets/Polemic.js	Wed Feb 27 18:39:53 2013 +0100
+++ b/src/widgets/Polemic.js	Thu Feb 28 11:42:58 2013 +0100
@@ -141,6 +141,9 @@
 			        	e.originalEvent.dataTransfer.setData("text/x-iri-title",_annotation.title);
 			        	e.originalEvent.dataTransfer.setData("text/x-iri-description",_annotation.description);
 			        	e.originalEvent.dataTransfer.setData("text/x-iri-uri",url);
+			        	if (typeof _annotation.thumbnail !== "undefined" && _annotation.thumbnail) {
+			        		e.originalEvent.dataTransfer.setData("text/x-iri-image",_annotation.thumbnail);
+			        	}
 			        });
                 _annotation.on("select", function() {
                     if (_this.tooltip) {