http://www.reddit.com/r/IAmA/comments/f73ma/iama_5_time_nyt_best_selling_novelist_author_of/
You can register with Reddit for free and ask any questions you like (AMA = Ask Me Anything).
Note that he doesn't have to respond to everything, but it's only 4 hours into the AMA, which makes it more likely that he'll still be looking at the comments and answering questions.
Figured some here might be interested.