Usability 
A full featured, "mid-sized" client similar to Twitstst and Slandr with avatar images and quick access icons for replies, direct messages, retweets and favoriting. It also lets you follow new Tweeps and has a full-text Twitter search to help you find new people to follow. But the best thing about Dabr for me is that, unlike Twitstat and Slandr, it works in Opera Mini without the need for horizontal scrolling.