The idea is to have a fic and/or artwork posted every day of the summer, from Jun 21st to September 21st - and all via pseudonym journals so it's a totally flat playing field and work gets judged on merit. Plus, everyone gets to try and guess who wrote what. (An identifying list will be posted at the end of the season.)
I'm not saying I've signed up, and I'm not telling you what my pseudonym is... (bugger) but it's multi-fandom, and there's no limit on how many times you post or what fandoms you work in. If you have a yen to try your hand at a new fandom or an odd pairing, this is the place to do it. :D
There's a 500 word lower limit, so it's not a huge commitment unless you want to make it one, so go and sign up here.