I saw two or three street spam signs in the Truckee area when I was there on vacation this last week:
* One at the corner of Highway 89 and the entrance to Squaw Valley -- a "Work from Home" sign * One in Truckee, right at the corner of southbound Highway 89 and I-80, near the turnoff for McDonalds -- this said "Herbalife" on top * Another sign in a gas station parking lot near there -- unfortunately, I don't remember the gas station's name, but it was on a pole on the south side of the property
I didn't remove these signs because I was with a tour group at the time, and because I'm not sure exactly what California law says about removing these signs. (Then again, remembering Cockeyed's page, I should have just gone ahead and done it.)