Are you an expert? In *anything*?
Peter Shankman ("CEO, Entrepreneur, Adventurist") has started a website that aims to bring together journalists who need an expert, and experts who don't mind being exposed to journalists.
Each day, you'll receive up to three emails, each with anywhere from 2-10 queries per email. They'll all be labeled with [shankman.com] in the subject line, for easy filtering. If you see a query you can answer, go for it! HelpAReporter.com really is that simple.
I've been doing it for a few days now, and it's rather interesting what reporters are looking for (today I've had "are you a vegan with a heartwarming story about animal companions?", "how do you prevent sports injuries in 14-18 year olds?" and "Do you have experience of the H-1B visa programme?"). The only request I've responded to was one about alien evolution.
You pay nothing to join in, and receive only karma (apparently), but, if nothing else, it's a bit of a laugh.
Register here: http://www.helpareporter.com/