What kind of multiplayer browser games do you play like runescape?
tigerwoodsonline.ea.com is the best free browser / online game out there...as I mentioned in another thread.. but none of you guys listened.
kongregate.com has a lot of browser flash games, many of them multiplayer. I havent played it in a while, but always tought it is the best source for browser fun.
Artix entertainement has a lot of good games that runs on your browser. but just 2 of them are online
have you tried quake live? its pretty nifty.
Everybody loves vuvuzelas!!!!!
there are also many board games that you may like out there ... Gamesforhire.com is a good site for those type of games