I’m a fan of the Lonely Planet, but I’m always looking for improvements on the usual guidebook model.  This has me keeping an eye on the electronic efforts.   Some have worked – I’m a long-term subscriber to Vindigo, which focuses on US cities (not exactly a guidebook replacement, but it’s pretty good).  Still looking for something that would let me replace that 4lb Lonely Planet I dragged through India, however.  I recently came across this comprehensive review of an effort to do just that by Lonely Planet and Nokia, where (some of) the LP content has been reformatted and made available through the Nokia Maps application.   In the end, it’s more supplement than replacement, but it’s a good start.