Reddit Go Club
Reddit is an online community based on link and information sharing. It has recently grown to be one of the most visited sites (112th overall according to Alexa as of this writing).
Reddit is divided in subreddits, according to themes. There are subreddits for programming, Linux, worldnews and a whole plethora of subjects. Among them, go.
The reddit Go club is formed by the people in the baduk subreddit, and you can join the Reddit Go Club here.
There is an ongoing tournament, played at KGS: 1st Reddit Go Tournament. You can find more information (until we post more information here) here.