hello, i live in san francisco. been riding a 20" bmx around the city (like, from outer sunset to mission to downtown and back to outer sunset) for about 9 months. finally broke down and got a bike more suited for cruising this past week.
it's still pretty much stock and i can already tell which bits i really need to replace but i love it.
http://velospace.org/node/1807 check out the crappy bar tape job i did hahaha. oh well