Well it seems to be standard operating procedure for bands like Fallout Boy to do a club tour around the time their record comes out in over to produce maximum hype. By playing small venues and shutting out lots of fans it ensures there will be pent up demand for their next area appearance in a larger venue. I also wouldn't be surprised if their isn't some sort of buy the CD get a chance to buy tickets to the show promotion for this "event".
What I would like a My Chemical Romance show at the club so that it can watched safely from the DJ booth.