Popular Twitter app Tweet It! has a small promotion to celebrate its one year anniversary. Currently available for free in the Windows Marketplace, the application gives you a different interface to Twitter, and has a number of smart live tile functions.

From the Marketplace listing:

It's "Faster Tweeting!" feature lets you Post your thoughts instantly, post what you are currently listening to quickly, add pictures from your gallery or take new shots quickly with pinable tiles and built in helpers. User selectable modes will make using your timeline a joy. From "Street Mode" to "Shake to Refresh" and "Pull to Refresh" they will help you make the most of twitter, offering  dedicated night reading modes or even prevent you from bumping into somebody in the street.

Now up to version 3.0, this might be yet another Twitter app, but it's different enough that it's worth a look. Normally the trial mode would be enough, but now you can experience the full application... if you're quick!