I wonder if these subreddit as a business ventures have any legs. They've got a market verification, but are they viable?

This is pretty much the same as Quora in my opinion. People love to show off their expertise which is what 99% of people do in Quora.

It basically formspring for adults, and formspring almost became huge.

We invited a few YC alums to answer questions on Askolo - ask them about experiences going through the YC application and interview process, what YC is like from a founders point of view, and anything else you'd like to know. They are not speaking on behalf of YC, but rather to offer personal thoughts and perspectives.