Since the OPT 90 days unemployment limit is out, there came a new business
by Indian or Chinese (maybe some of the same people who used to operate ICC)
that will let you be their volunteers to keep valid OPT status, but you
need to pay them, they don't pay you. I think this business is much safer
than ICC before, because 1. no need of USCIS approval and 2. no pay
volunteer is allowed.