Here are a few more fun things we've caught with our iPhones.
Ponder this one for just a moment.
The robot threat is manifest. Though it is unclear if they have taken over the mail system or the mail system is being used to warn us. This one strikes me as kind of Pynchon-esque.
The joke here is hard to see (and probably only funny to me). The first line after the large font says "Head".