Can I call my Twitter client "Twttr"?

[BixbitSystems]

The title says it all. Can I call my Twitter client "Twttr"?
Do you know any apps that are called "Twttr"?
When Twitter was firstly created it was called "Twttr", then they changed the name to "Twitter". Is "Twttr" a trademark?

Do you know if I can use it?

Rafal Chmiel, twitter.com/RafalChmiel

 

[PohTayToez]

Definitely not. Twitter actively goes after any services or apps that have "twitter" or "tweet" in their name, not to mention the fact that simply calling it "twttr" is about is clear cut as trademark infringement can get.