There isn't an effective embedded real-time "AMA" type platform that exists to my knowledge. Wouldn't be a terrible idea for a startup (but it could be argued that it's redundant with Facebook/Twitter)
AFAIK, both companies no longer do that as their line of business.
Somebody get pg on the horn and find me a cofounder! :)
I think it would be a fun project from a programming perspective but from a viable business perspective I think reducing it down to a list of requisite technologies is "mostly" an exercise in nerd whimsy. AMA exists as a concept because of Reddit and its community, whereas Storify helped shape the concept of Twitter narratives (or maybe contexts is the word I'm looking for). For an AMA if you get heavy hitters, like Barack Obama or Bill Gates, they are going to go to Reddit because that's where the community is, which is precisely the type of AMAer you would need to make an "AMA startup" a viable business. So while Storify can grow from out of Twitter an "AMA startup" would have to grow at the expense of Reddit, and that's where the real challenge is.
Anyway, I've done some 'transcribing', editing and formatting to make it a little easier to read[1]. If anyone from betalist or Patrick takes issue, feel free to get in touch and I'll remove it right away. However, hopefully this will allow more people to see it. I've linked the source so you can see the original.
[1] http://www.startupclarity.com/blog/startup-advice-patrick-mc...
We'll be releasing a PDF soon with a summary of all questions and answers. You kinda beat me to it hehe, but the format will be different anyway, more close to the original (giving question askers credit as well, etc).
If this is going to become a regular thing, Betalist, I would recommend a proper comments system. Disqus is OK for blogs but if you intend to have a high value conversation then it's a bad choice, IMO.