If you're traveling in the coming months, in conjunction with some local friends, I've got a number of "Beer Guide" websites up and running:
London,
Dublin,
Los Angeles,
Antwerp and
Atlanta. The London one is the most complete and the Atlanta was is very much just getting started. They aren't comprehensive sites, just the pubs that I (and my local friends) like. So check them out if you are headed to any of those places.