Twitter has now officially launched for Blackberry mobiles. 

The application has been in beta for around half a year now, where it has been carefully optimized and tweaked to provide all the features you'd expect and maximum reliability and ease of use.

As you'd expect the application provides all the functions you could ever need on Twitter including the ability to get your messages as soon as they arrive. Obviously it has the ability to Tweet, re-Tweet and send messages to other users.

You can also post a URL to your Twitter account from your BlackBerry Browser, upload pictures and view profiles from anywhere in the app. Another useful feature is the Autocomplete function which remembers your username and enables you to search quicker.

The Twitter application for Blackberry can be downloaded now from the BlackBerry App World now. It is a free application and should be a joy to use with a QWERTY keypad.