PostUp, a social media platform founded by Internet entrepreneur Bill Gross, has acquired UberTwitter, a Twitter client on the BlackBerry platform, and has also announced that it is changing its company name to UberMedia.

UberMedia is a developer of applications and web-based services that make it easier for users to find, follow, and communicate with others on Twitter and other social media platforms.

UberMedia applications include UberTwitter, Echofon, and Twidroyd.

UberMedia CEO Bill Gross said Twitter has grown to be a real-time communications medium on the planet and their goal is to be the partner to Twitter in enhancing the Twitter ecosystem, and to provide innovative ways for Twitter users to share and consume content.

UberTwitter founder and CEO Paul McDonald said that working closely with Twitter for the past couple of years has made them passionate about real time communication, and they look forward to continuing to work closely with Twitter as part of UberMedia.