Pimping: Three Sentence Fic-a-thon
From their page: "This is a challenge where you answer a prompt with a fic consisting of only three sentences. It's open to all fandoms and you can post and answer as many prompts as you like."
Given how varied the fandoms on my friends list are, this seems like a great little fic-a-thon for any of you who like to write to prompts... and a great way to keep fandom hopping on LJ. :)
Thanks to harmony_lover for pointing it out.