Lately it seems we've been (or at least, I've been) taking a pessimistic view of the mapping community. While BWMN is not everything everyone could ever want, it is a great site.
So cheers to being able to upload as many maps and replays as you want to a reliable and fast server.
Cheers to having a site so active that comments on your map can be expected within 24 hours.
Cheers to a great search engine.
Cheers to the many great articles written by knowledgeable and intelligent people.
Cheers to [add what you appreciate about BWMN here]
cheers to a bunch of mappers who create awesome pieces of playable art.
Biggest problem imo is how negative some of you are about other people's maps. If it wasn't that hard to find someone to play with who is at a comparable level, and if I had more time, I'd still be playing BW just to play those maps ;)