There are lots of bad things about the wild wild web but the good things can seriously outweigh them.

This morning I picked this up off twitter. It is, as near as matters, a live map of the London Underground system showing the real time positions of trains. It is in the same vein as the live air traffic control map that I posted about during the volcanic ashcloud crisis. If nothing else it is a bit of fun but it does show the power of technology.

You might want to bookmark this post so that you can compare what it looks like during one of the periodic tube