"EFF Music Share-In Festival 2002
Saturday, September 14th, Noon-5pm
Music Concourse Bandshell in Golden Gate Park (near the Japanese Tea Gardens between MLK Drive and JFK Drive) "

If you are in SF, I highly recommend this. Went last year. Sat in the sun in Golden Gate park listening to hippie music. Got a tie-die and traded MP3s with friends over 802.11... This is what San Francisco was supposed to be.

EFF Share-In