One of the persistently weird things about working in Silicon Valley is that I am constantly passing billboards for items that I not only don’t use (nothing new about that), but I don’t even know what they are. Just not a clue. I don’t think I’m expected to. There are enough people going up and down Route 101 who are versed in the inner workings of computers that the advertisers aren’t even trying to talk to mere end users like me.