There are two several ways to twit on a Windows Mobile:
- The best way is to use a dedicated twitter application like Pocketwit which is a freeware. With it, you can post to Twitter using a URL you want to share, a picture you have stored on your smartphone, or a picture you just snapped with the camera, and you can even insert a GPS link showing your location.
- HelloTwitFace: It gives you the ability to post your status on Twitter and Facebook or HelloTxt
- You can just redirect the mobile browser to http://m.twitter.com and you will be taken mobile webpage of the twitter. It is fairly bandwidth friendly.
I personally use m.twitter.com as the Pocketwit takes a while to start.
Updated: Thanks to freewarepocketpc.net for letting us know about other twitter applications.