If your carrier is Sprint, you should give the Official Sprint 6.5 HTC TP2 upgrade a try, it can be found here:
http://www.htc.com/us/support/touch-...int/downloads/
labeled: Sprint Touch Pro2 MR | 03.19.2010
it comes with a built in Twitter application made by htc called PeeP, it is location aware and gathers ur location prior to tweeting. Have a nice day!