According to the Wall Street Journal, Twitter is about to get the trademark of the word Tweet by settling a suit with Twittad which currently holds the trademark to Tweet
“”On Monday, James Eliason, CEO of Twittad, said in an interview that Twitter would drop a lawsuit it filed against his company last month that sought to nix Twittad’s registered trademark of the word “tweet.” In return, Des Moines-based Twittad would transfer its registered trademark of “tweet” to Twitter, he said.'””
As part of the settlement Twitter would restore Twittad’s account on Twitter so that it can resume business.
If Twitter gains control of the Tweet trademark then a lot of domain holders better take notice.