I know it has room to grow with new Payment Processors (ie. Google Checkout...), but dang if I am not impressed completely with how well this Component solves the issue of selling event tickets on a Joomla-powered site. VirtueMart plugins are only worth it if you need VirtueMart to run other eCommerce functions. Also there are some great Event Listing Components (RedEvent & JEvents are my faves) with payment & reservation options - but for a simple Ticketing solution, those just don't cut it either.
For the particular site I utilize TicketMaster on, I don't care how many people RSVP online, I care about how many people actually buy tickets and then can print and bring those tickets to a show, where I can actually verify that their tickets are valid.
TicketMaster is a Winner!!! Keep up the good work guys.