tweetheart

noun3

1. •
   (Internet) A Twitter user who is popular with others.

   • One of the latest twilebrities is Simmons alumna Julia Roy, '05. She was named "America's Tweetheart" by Vanity Fair, which called her a "26-year-old New York social strategist turned twilebrity." — 2011
2. •
   (Internet) A Twitter user with whom one is infatuated or involved romantically, especially if they were first met through the service.

   • "I actually met my girlfriend on Twitter," says Verdino, who has been tweeting for the last two years. "We call ourselves tweethearts." — 2009
3. •
   (Internet) A Twitter user who is one's personal friend or within one's broader social networking circle.

   • "Just got the imaging for my new fragrance Radiance and thought I'd share it with all my tweethearts," she wrote. — 2010