This falls under both "WTF" and "Awesomesauce" categories because it has me laughing heartily and scratching my head trying to figure out just what kind of moronic genius came up with this idea.
Textastrophe is personalized trolling at its best. This guy/girl/comedic robot finds people's cell number from advertising and then starts a dialogue with them that quickly spirals out of control.
I really don't want to post any spoilers for these dialogues, but you can see them all at the Textastrophe website, just after a short intro from the comedian itself: "Next time you post your phone number in a public place, think again. This is a collection of text messages I've exchanged with people who have done just that.