This would seem to be a weak aspect of the site—there are no postings to let us know where his upcoming travels will take him. Even the radio interviews—I hear about those usually the day of. And when he was on the Infidel Guy’s webcast, I received the email alert the following day—doh!
See the Upcoming Events forum on this board, jon. He’s apparently making an appearance in NY next week, and he’ll be out here in the SF Bay Area for a book-signing on Oct. 6th. As for other stops he’s making, maybe try emailing the moderator to ask him to post us some dates and locations.