Hey Eric,
Great to see you at LiNC -- thank you so much for all your contributions to the hackathon and the conference -- it's devs like you that make the developer track great!
I'll have to defer to JeffY to answer the question about whether or not presentations will be published and where.
We have no set time when we were going to shut down the hackathon sites, but we were probably going to do it soon. We can leave your hackathon site up for a while if you would like us to -- let me know if you'd like us to (and what site you would like us to keep up).
-Doug