Usually I'd agree with you, but San Francisco is _really_ into its neighborhoods. Woe unto you if you say you're in Potrero Hill when you're in Dog Patch, or say you're in the Mission when you're on 12th street on the edge of SOMA. It's why I built the webapp, since as a new-comer I was finding myself on the receiving end of a lot of unwarranted ribbing over where exactly I was!