I haven't been big on the T-Shirt contest scene but Tilteed.com has a combination of exposure, compensation and artist rights that's got me excited about the possibility of what these sites can be for indy t-shirt designers. It also provides me a chance to do shirts and designs that are a bit beyond my current capabilities. The site is new and the community small but there have been some pretty cool shirts made, my favs so far
Greg Abotts Joy Ride
Rawroutlouds - Get a Job
TangYauHoongs - So Hot Yet So Cold
So join up, vote up and submit some stuff too...