Finally got a hit on this question. According to
Ad Week she is
Erin Spencer, and the ad is called "Strip Tease." She doesn't seem to have done much, IMDB lists one episode of CSI from last season. I'm still not sure if she's the girl in the "house folding into the phone" ad, but I'm making some inquiries.
I thought about posting all the unanswered questions from the blog comments, but decided not to. If things don't pick up around here soon I'll either do that or send an email to everyone who asked a question.