Despite [article id="1684760"]North Carolina's constitutional ban of same-sex marriage[/article], the issue's supporters had reason for celebration Wednesday (May 9): President Barack Obama has officially backed gay marriage.

The news became a trending topic on Twitter almost instantly, with the social-networking site's millions of users -- including celebrities -- issuing countless tweets of thanks to the president.

"Bravo, Mr. President, and thank you," Neil Patrick Harris tweeted. The actor is engaged to his longtime partner, David Burtka, and the pair adopted twins together in 2010.

"Open our hearts & minds! Proud of Obama for speaking up," wrote "Glee" actress Dianna Agron, with co-star Chris Colfer tacking his happy thoughts onto those of Ellen DeGeneres: "I second! RT @TheEllenShow: Thank you President @BarackObama for your beautiful and brave words. I'm overwhelmed."

"Star Trek" and "Mission: Impossible - Ghost Protocol" star Simon Pegg summed things up succinctly with initials and an emoticon: "GO BO!!! :)"

If there were awards handed out for the most LOL-inducing celeb tweet, that would go to "Modern Family" star Jesse Tyler Ferguson, who had a message for the first lady and his partner: "With @MichelleObama & @JustinMikita permission I would like to marry @BarackObama right now!"

Even more excited was Kim Kardashian, who had way more than 140 characters to express on the subject, so she took to her website. "This is such a huge step forward in our country's fight for civil rights and I hope that today this will give hope to so many young people across the country," she wrote. "We've never had a president so supportive of the lesbian, gay, bisexual and transgender community and today I am proud to be an American!! I'm so happy that our country is making history and moving forward. No more living in the past!"