Twabbit for Windows Phone is a Twitter client that is nicely laid out, has plenty of features and overall is a really nice Windows Phone app.
Twabbit's main pages cover your Twitter home page with all your tweets, interactions with other tweets and your direct message inbox. Other key features include:
Persistently present tweet button that enables you to compose tweets from anywhere in the app
Quick reply bar, Support for multiple Twitter accounts
Ability to mute users, hastags and apps
Support for Twitter, TwitPic and yFrog photo upload services
Live Tile Support
Tweets load fast and there are a ton of settings to let you customize Twabbit to suit your needs and tastes. There's even gesture settings for customizable single and multi-touches.
There is a free trail available for Twabbit and the full version is currently running $.99. Today's the last day to pick Twabbit up for $.99 and then the price jumps to $1.49. If you're looking for a nice Twitter client for your Windows Phone, Twabbit is worth checking out.
You can find Twabbit here at the Windows Phone Marketplace.