So hey, I found this:
They have a challenge that's going to close for signups real soon and like NO ONE has signed up for it.
Sign-ups: April 24-May 1
Assignments sent out: May 3 (or earlier)
Assignments due: June 14
Assignments revealed: June 21
Creators revealed: June 28
I'm not sure what to do myself. The comm has 22 members. But there is NOTHING in the exchange tag set, which I'm not sure how that would work .
ETA: Ah, the mod says to use last year's tag set, which has a pile of characters and relationships under "Characters."
And this is way last minute, but I only tripped over the comm and the exchange yesterday, while browsing Tumblr.