Info box instead of tooltip as suggested by @fredj

examples/vector-layer.html

@@ -43,6 +43,11 @@
           </div>
           <div id="tags">vector, geojson, style</div>
         </div>
+        <div class="span4 pull-right">
+          <div id="info" class="alert alert-success">
+            &nbsp;
+          </div>
+        </div>
 
       </div>
 

examples/vector-layer.js

@@ -48,7 +48,7 @@ map.on('mousemove', function(evt) {
   for (var i = 0, ii = features.length; i < ii; ++i) {
     info.push(features[i].get('name'));
   }
-  document.getElementById('map').title = info.join(', ');
+  document.getElementById('info').innerHTML = info.join(', ') || '&nbsp;';
 });