AO3/DW/Somewhere Else?

[katleept]

So in trying to find a new active comm to inspire me, I've finally bitten the bullet and am beginning to seriously consider trying another site after all this time? I have no intentions of leaving LJ (ever), but if there's some fun to be had elsewhere, I may want in! Where else do y'all frequent? Are there comms/pages elsewhere you would particularly recommend? I know AO3 and DW seems to be where most people flocking, but I'll consider either or elsewhere. Heck, I know there's still bound to be more fandom participation somewhere out there, and I want in, dang it! :-(