Smart, but are you legally allowed to use people's photo in ads without their permission? (Not a big issue in this case and probably it would have worked even without the photo, but I'm curious.)
I'd think that with anything like this; if it were illegal, then likely the individual themselves would have to sue me. Hopefully they wouldn't want to take it that far once I explained to them that I was just targeting them and trying to get their attention etc. Certainly for Thomas, Vungle turned out to be quite a good investment thus far and a nice story, so I hope he wont sue me ;)