Twitter index: Britney Spears performs new song, Lady Gaga premieres video

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Twitter is buzzing with posts about Britney Spears and a just released video from Lady Gaga on the morning of June 17.

Twitterers are talking about a new song called "(Drop Dead) Beautiful" performed by Britney on the first stop on her Femme Fatale world tour using fifth place term "Drop Dead Beautiful."

"TEOG" is short for the name of Lady Gaga's latest music video for "The Edge Of Glory." The video premiered on American TV show "So You Think You Can Dance."

Twitter users are arguing about the video and tweet, "I think it's wonderful that TEOG video was NOTHING like we imagined," "I really love TEOG video, Its so simple and beautiful," "Lady Gaga is the only person in the world who can shock people by not being so shocking" and "Just saw TEOG and I have to say that it's too boring and cheap for me."

American Express is advertising its Membership Rewards points giveaway with the number one topic on Twitter.

Second, third and fourth places are filled by the terms "#somebodytellmewhy," "#butdoyougotasstho" and "#wakemeup."

"THUG LIFE," the name of a group started by rapper Tupac Amaru Shakur (aka 2Pac) is in sixth place and the name of Dutch singer "Glennis Grace" is in ninth place.

"Goodnight Twitter" and "Sweet Dreams" are back in Twitter's top topics as Tweeps bid their followers good night and sweet dreams.

The top 10 most talked about topics on Twitter on June 17 at 7:30 AM GMT are:

1. #MembershipRewards (promoted)
2. #somebodytellmewhy (new)
3. #butdoyougotasstho (new)
4. #wakemeup (new)
5. Drop Dead Beautiful (new)
6. THUG LIFE (new)
7. Goodnight Twitter (re-entry)
8. TEOG (new)
9. Glennis Grace (new)
10. Sweet Dreams (re-entry)