I've created a Squidoo ("lens") page for Austin Spring Tango Festival and will be adding material as it becomes available. The main page for ASTF, http://www.austinspringtango.com/ will be updated with 2010's information soon. Meanwhile, feel free to leave feedback and let me know what you'd like to see!
Austin Spring Tango Festival on Squidoo: http://www.squidoo.com/astf
Central Texas Tango on Squidoo: http://www.squidoo.com/infinitetango