I can't imagine what it would have felt like for those guys. I'm wondering, was it an interview for the following two as well but they didn't get selected?
CodeCombat's novel, and given YC's history with Codecademy and One Month Rails, along with the founder's previous business venture - getting picked up wasn't a surprise.
PG has already shown an interest in programming education; add to that these guys have a live product it is a bit of a no brainer to "incubate" it a little. Curious to see an actual profit model though; I'm not sold on the weak "recruiter" angle. From what I see it is more of a kid's educational app.
The brokerage business though; whether he gets accepted by YC or not, I expect he is going to make some serious bank on that.
I'm surprised they didn't grill him more on that subject.