We've been waiting for T-Mobile USA to follow suit and raise standard text messaging rates from 10 cents to 15 cents each, and that wait is now over. Effective June 1, 2007, the fourth-largest mobile carrier in the U.S. will make that rate change for its wireless subscribers who want to use the "casual" text message (pay-per-use) instead of subscribing to a text messaging plan. With competitors AT&T, Verizon Wireless and Sprint Nextel having already made the rate increase, at least the last carrier has now fallen in line. The good news: like with the other carriers' changes, you might just be able to dump T-Mobile come June with no contract breach early-term fees since this is a material change to the contract of probably every current T-Mobile USA subscriber. But hey, the carrier's at least dropping that MMS rate from 25 cents to 15 cents on a pay-per-use basis. Joy.