In typical Shat fashion he's eschewing the traditional "AMA" format but you can ask questions on this thread and he might answer you! His most recent post was just a few minutes ago!
http://www.reddit.com/r/startrek/comments/1818um/someone_said_i_havent_said_hello_to_rstartrek_yet/ (http://www.reddit.com/r/startrek/comments/1818um/someone_said_i_havent_said_hello_to_rstartrek_yet/)
Just follow him on Twitter, he responds to questions everyday!