Twitter recently suspended all Twitter clients supported by Ubermedia. Among the clients suspended are Twidroid and UberTwitter, which are both insanely popular on Android OS and Blackberry OS. They also operate and support the popular TweetDeck client which is available on iOS and several other platforms. They've also acquired Echofon, another popular Twitter client for iOS.
According to Twitter, they've been working with UberMedia since April of 2010 when they were operating under the name TweetUp, which also apparently violated some copyright issues. Currently Twitter is claiming that Ubermedia has changed the content of tweets in order to generate revenue for themselves. They've also pulled the clients due to privacy issues concerning direct messages over 140 characters.
When asked about the suspension, Twitter spokeswoman Carolyn Penner had this to say:
We ask all developers in Twitter ecosystem to abide by a simple set of rules that are in the interests of our users, as well as the health and vitality of the platform as a whole.
We often take actions to enforce these rules; in fact, on an average day we turn off more than one hundred services that violate our API rules of the road. This keeps the ecosystem fair for everyone.
Some of the allegations being held against UberMedia are pretty serious. For the full letter Ubermedia received, hit the break!