I've got one story with 2, one with 5, and one that even the archivist hasn't gotten around to yet. ...Actually, the one with 5 was written for their Anniversary Challenge and should really be distributed elsewhere soon.

I suspect that it's just not sufficiently well established (or navigable) for anybody to go there to find new fic regularly, and there's not much in the way of searchableness set up yet, which means people aren't likely to browse so much. *frowns thoughtfully* FA probably is the best so far for actually being able to find things, and it helps that the forum and review boards are integrated.