Thunder

WikiMindMap produces a mindmap based on a search of Wikipedia.  This provides an interesting and visual way of researching using wikipedia.  As a test I typed in Shropshire and this is the map displayed:

By clicking on a cell with a ‘+’ it expands the branch for further siblings, clicking the green icon will re-centre the map with that branch being the central point, if you click on a branch without any icon it will open up wikipedia in a new window/tab at the relevant section.