For posting:
- invitations to games (you can also use the New Game menu)
- information about upcoming tournaments
- discussion of games (please limit this to completed games or discussion on how a game has arrived at a certain position ... speculation on who has an advantage or the benefits of potential moves is not permitted)
- links to interesting related sites (non-promotional)
I think this would then give black an advantage which is too great. Another option is to give black one or two extra pawns, maybe the bishop files, or start with say the rook pawns also advanced one rank.
Another option (if it is possible) is to keep two ratings, one for playing as white and one for playing as black.