Bitcoins have come to Oakland.
photo CC BY-ND 2.0 by allaboutgeorgeThere are billboards in Temescal (picture) and on Grand Avenue. The billboards are being placed all over the Bay Area by Arise Bitcoin. Here's an article about them.
There was a bitcoin fundraiser for 2014 Oakland Mayoral candidate Bryan Parker.
There's a "bitcoin mining operation" in the Oakland Hills.
Feed Open Source is an open source funding platform using bitcoin with known ties to Oakland. I also hear bitcoin talk pretty often at Sudo Room.
Oakland Businesses/People/Other that take Bitcoin