DCist reader David writes in with this important question: Where does one get kegs in D.C.? I’ve lived here around a year, and have no idea. Online price lists are a plus, as is a NW location. We hear you, David. Sure, we’re not in college anymore, but sometimes when you’re set to throw a really big par-tay, going with a keg can be the most cost effective and least messy (no bottles to clean…