(Reuters) – Twitter Inc said on Tuesday that user names and media attachments such as photos and videos will no longer count toward the length of a tweet but the 140-character limit will remain. Twitter said the change, part of its efforts to simplify its microblogging service, will happen in the next few months. "A few simple changes to make conversations on Twitter easier! And no more removing characters for images or videos!" Chief Executive Jack Dorsey said in a 115-character tweet.