ETA: Ok, no need! ;)
-- There already is a no-Wincest comm, called, appropriately enough: wincest_free. Not much fic right now, but still, it exists! It's pro slash, just no incest. It's also got vids, discussion, etc.
-- And another one! ;-) spn_brotherlove. More fic here and about 400 members. Awesome!
-- Also, joining spn_gen.
-- And here's a SPN fic archive that's also Wincest-free. http://winchester-journals.net/
Thanks to kayim and thelana for the links!
Also, Happy Birthday, gottalovev! ;-) Have a fantastic day, love!!!