I'd recommend your friend to attend to as many start-up events as possible. First, many start-ups use such events to recruit. Second, he may be able to find a m

I'd recommend your friend to attend to as many start-up events as possible. First, many start-ups use such events to recruit. Second, he may be able to find a matching partner looking for his expertise. WorkIt.com is an excellent resource if your friend is in Bay Area. Another idea is to tell your friend to provide contracting services for start-ups. That way, he/she can test-drive the company while making a few bucks on the side.