Not only will you hear Helio subscribers remind you that “it’s not a phone, it’s got MySpace Mobile”, but you’ll start to hear the same cries of disdain from Sidekick owners. T-Mobile has announced that all Sidekicks — not just the upcoming Sidekick Slide and Sidekick 4 — will be getting a mobile MySpace application.

Through this mobile program, you’ll be able to do most of the basic MySpace kind of things like edit your profile, upload photos to your gallery (assuming you don’t have the camera-less Sidekick iD), and read messages sent from your friends. If you’re the ultra popular type, it seems that you can approve new friend requests as well. The rationale that T-Mobile provides for this new application is that 80% of all Sidekick browser clicks are on MySpace. Wow.

The new program is beginning to roll out this week and all owners of a Sidekick 3 or Sidekick iD should be rocking the MySpace by the end of October. On a side note, does the girl in the picture look like Debra Messing or Denise Richards to you?