If the twitter user has an egg as a profile picture, they are likely a fake.
Via The Hill:
"Obama's anti-gun campaign is a fraud," Stockman said. "Obama's supporters are panicking and willing to do anything to create the appearance of popular support, even if it means trying to defraud Congress," he added. "I call upon the president to denounce this phony spam campaign."Stockman said that in response to Obama's call for people to tweet their congressman in support of gun control legislation, he received just 16 tweets. But he said all of these messages were identical, and that a closer look at them revealed that only six were from real people.
"The other 10 are fake, computer-generated spambots," his office said in a press release. As evidence, he said these 10 tweets use default graphics and names, and have not engaged in any interaction with other people. Two of the tweets were sent at nearly the same time, and both follow just one person: Brad Schenck, Obama's former digital strategist.