Engage the interested parties [Feb. 16, 2012, 11:34 a.m.]
By now, people are starting to talk to you and hopefully registering for your event. Keep up with people! Make sure you answer questions that come at you. Here's a handy FAQ sheet for you to use.
Post one interaction you've had to the discussion wall. Comment on your peers' posts and tell them if you think they did a good job at fielding the question or comment their community member threw at them.