If you are a Twitter person and you don’t like to use the official Twitter client for Windows Phone — and the deep Twitter integration with the People Hub and Me Tile is not your cup of tea — you probably know of Seesmic for Windows Phone.
The application has recently been updated with Windows Phone 7.5 Mango support. That means you can now create and pin Live Tiles to your Home Screen for your timeline, replies and direct messages. Fast App Switching is also on-board so that you can jump back to the application as you left if. Follow the source link below to update or consult the Marketplace app on your phone.