The San Francisco Stencil Archive has been completely updated. Thoroughly enjoyed the S-Z archives visit, especially the Shy Girl / Heart 101 photos.
Also, The Strangers' "She Loves the Moon" stencil story game was a nice rediscovery. Years ago, we tried to put the stencils in order to make sense of the progress that was made, but I recall that archive update being unsatisfactory. Here's an early Joe Eskenazi article from 2007 about the long-gone project. Here is a Stencil Archive post about chasing the stencils and following the story.
Finally, Tech Destroys mostly dropped anti-tech, hip hop, and Grateful Dead humor stickers around SF, but they also managed to put up a few acid-influenced stencils around.