WASHINGTON - The Internet may never be the same — former House Financial Services Committee Chairman Barney Frank has officially joined Twitter at @BarneyFrank.

"I once said I did not intend to Tweet," he wrote on the social media site on Tuesday. "As you can tell from reading this, I changed my mind."

To date, Frank has only tweeted four times, half of which were related to defending the Dodd-Frank Act that bears his name. On Monday, he tweeted an op-ed he co-wrote with former Senate Banking Committee Chairman Chris Dodd related to the law's third year anniversary. His first tweet, which appeared on Friday, included a link to President Obama's recent remarks on the importance of the law.

Frank has already attracted more than 4,000 followers but that number is sure to go up once more people learn of his presence on the site. He received a big boost Tuesday, when he earned a Twitter endorsement from Henry Winkler, better known as The Fonz.

"You will enjoy it for a while," the "Happy Days" actor wrote. "We will enjoy reading your 140 characters."

Although Frank is known for his quick wit in person, he acknowledged in an interview with American Banker last year that writing is more difficult for him.

"As much facility as I have orally, I have none of that when it comes to the written word," he said. "I have to really sweat. I work at it. The organization - I always want to say too many things at once. So, yeah, I'm quick with words, orally. It's harder to write."

Frank was not the only former top financial services policymaker to join Twitter recently. Sheila Bair, the former chairman of the Federal Deposit Insurance Corp. during the financial crisis, began Tweeting on Monday as @SheilaBair2013.

"My first foray into social networking," she wrote. "I leapfrogged Facebook right into Twitter."

Bair used the site to promote her Fortune column on why Janet Yellen should be picked as the next Federal Reserve Board chairman, and a short video on her recent appearance in New York's Bryant Park to discuss her book on the financial crisis, "Bull by the Horns."

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