U.K. Election Results Shown in MapTube

I saw some great choropleth maps of the U.K. election results shown using MapTube from a blog post at the CASA blog. What is shown above are the results for the Liberal Democrat vote and the Conservative vote, with a degree of transparency for each. Use the small slider bar under the map icon to the right to increase or decrease the transparency. You can drag and drop the maps, too. It's a very slick interface.

I haven't used MapTube at all but it is one of the better web map interfaces. You can see what maps they already have, download as a KML, or upload your own maps using GMapCreator software. All maps come with legends, some legends are better than others. CASA is the Centre for Advanced Spatial Analysis out of the University College London.