Weekdays are useless to anyone not actually in London - even close by, it would take too long to travel in after work.
Also, pubs are hugely overrated for serious talk, where you want less echoes, less music, less TV and less shouty people. Try a Starbucks?
Edit: meeting near a station or at least Zone 1 tube is also a plus.
I'm enjoying lesswrong.com a lot so far, and it sounds like the last LW/OB meetup was a lot of fun. MBlume asks:
I don't think that there are so many of us that we need an automated system for this; the threading system should be enough.I'll post a few top-level comments for various parts of the world, and encourage you all to follow up and tell us where you are. Ideally, find a comment that has where you live in it already and add "me too".
I'll try to keep this post updated with useful things. I can't wait to play Paranoid Debating!
Edit: Please don't post where you live in a new top-level comment! Try to find a comment referring to the rough geographic region you live in and post under that; it'll make this post easier to navigate. I've divided the world into three (North America, Europe, everywhere else); posting under those comments will help. Thanks!