Quoth Primus: "Funny thing about weekends when you're unemployed. They don't quite mean so much. Except you get to hang out with all your working friends." These days, you don't need to be unemployed to respect the notion of a frugal weekend. Enter FunCheapSF. The site's moniker is self-explanatory, but we'll recapitulate nevertheless. You'll find art openings, film screenings, concerts, and many a party here. And woe to the office that finds its holiday party listed on the site and is invaded by a small army of freeloaders. But if you're a freeloader, this is invaluable.