Punk-Ass Book Jockey

I've started compiling recc lists. It was inevitable, I suppose -- I've made my way through hundreds of stories and hundreds of sites now, and there comes a time when you find something shining and beautiful that no-one else seems to be reccing. Eventually, I'd like to start a Jane's Guide-esque fanfic rating site, but that has to wait until I wrap up all the loose ends of my academic career and find a full-time job that doesn't make me angry all the time.

So. Where's the collar fic? I've found three good pieces: fandom_pillory's The Collar, Casira's Collared (livejournal here: casirafics) and _riz's The Latest Fashion, Old Boy.

They all rock hard, but I want more. I'm greedy, so I am. Suggestions, anyone? Is there an lj community entirely devoted to collar!fic somewhere that I just haven't found?