Improved Booth London poverty map online

A new beta version of the Booth poverty maps from late 19th century London is now available and it's a huge improvement on the previous version.
Go to phone.booth.lse.ac.uk (cute address) and you'll find the Booth maps overlaid on either the OpenStreet map or various versions of Google maps, with a slider so you can move between the two. You can also see selected police notebooks indicated as a dot on the map.
A modern day equivalent of the Booth map, the Index of Multiple Deprivation 2010, may also be viewed.