Here's the link, he is on now. Just passing on info, not a real diary.
http://www.reddit.com/...
2:19 PM PT: Per request, reddit is a site that is similar to a "chat room", it has moderators but is primarily run by "upvoting" and "downvoting".
Obama was hosting an AMA "ask me anything", where anyone can ask anything and he will likely answer those questions that get the most upvotes.
It sounds like the site crashed about 10 minutes in and is still not up. Several commenters below got some of the goods before the crash.
Thanks Everyone for your help, me posting this had far more to do with timing than expertise.
2:26 PM PT: In addition to the comments below that captured some of the dialogue before the crash, here is a link to CBS tech that has a bit more dialogue and info:
http://www.cbsnews.com/...
Disclosure, a friend of mine is the tech writer for CBS and this is her post, I am quite sure there are other articles with same info but this is current and I know legit :).