More goofy things that Silicon Valley types say a lot
"Cloud Computing". Nobody can get through two sentences without saying "it lives IN THE CLOUD!" about something. As far as I have been able to figure out, saying something "lives in the cloud" is equivalent to saying "it's hosted on an internet server, but you're not allowed to ask where or how." I think the term has become popular precisely because of its vagueness.
"Bread crumbs". Used to describe navigation aids on a website that help you find your way back to the home page. Cute metaphor. Unfortunately everybody seems to have forgotten that Hansel and Gretel's bread crumbs got eaten by animals and completely failed to get them home...
"Laundry list". Everybody's always talking about e.g. a "laundry list of features". Despite the fact that nobody makes lists of their laundry anymore because it's 2010 and people have, like, washing machines. I don't know anybody who's ever made a "list" of their laundry. Grocery lists, yes. Shopping lists, yes. Laundry lists? It's one of those undead linguistic cliches, a metaphor that lives on long after its referent is no longer a common part of life.