I'm one of Solvent's App Academy grads here. Unclear to me whether this is indicative of LWer's superior rationality, and to what extent it's because word about App Academy has gotten around within the LessWrong community. For me, the decision process went something like:

1. Luke recommended it to me.
2. I asked Luke if he knew anyone who'd been through it who could vouch for the program. He didn't, but could recommend someone within the LessWrong community who'd done a lot of research into coding bootcamps.
3. I talked to Luke's contact, everything checked out.
4. After getting in, I sent the contract to my uncle (a lawyer) to look at. He verified there were no "gotcha" clauses in the contact.

So I don't know how much of my decision was driven by superior rationality and how much was driven by information I had that others might not (due in large part to the LessWrong community.) Though this certainly played a role.

(EDIT: And in case anyone was wondering, it was a great decision and I'd highly recommend it.)