If you scroll down to the News section, you'll find that the Month of August is going to be time for a Crawl tournament. It also appears that you can enter in Clans - I think it would be awesome to have a CB clan of players entering, especially since I know a number of you play Roguelike games.
I don't have a clue how, but you can play this game over a server and see other players' progress...if anyone else wants to help me look into this and figure it out, that would be awesome.
"You can also play Crawl online on a public telnet server thanks to the good folks at crawl.akrasiac.org and crawl.develz.org. These public servers allow you to meet other players' ghosts, watch other people playing, and, in general, have a blast. In addition to the most recent official release the latter also hosts the beta version of the next one, which you can download or play online."
Let me know if you're interested in getting together/joining a CB clan for that tournament! :)