There were 9,200 tweets per minute about Lady Gaga during MTV's 2010 VMA ceremony

"Sunday's Video Music Awards became an interactive experience unlike any before it as fans took to Twitter and sent approximately 2.3 million tweets during the East and West Coast runs of the show. Not surprisingly, the woman who swept the awards show was the most talked-about celebrity on Twitter: Lady Gaga was the subject of more than 9,200 tweets per minute, which was more than half of the total tweets being sent about all of the artists being tracked by MTV's Twitter Tracker.
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This year's show also saw a significant increase in the tweet volume of last year's VMAs, which is impressive considering Sunday's show didn't have as controversial a surprise moment as Kanye West's interruption of Taylor Swift's acceptance speech last year. The show also marked a big increase from when the Twitter Tracker was used at the MTV Movie Awards earlier this year. There, the most discussed moment of the night — Tom Cruise and Jennifer Lopez's dance onstage — only clocked in at 1,800 tweets per minute.
Overall, the artists tracked generated an average of 15,000 tweets per minute. Following Lady Gaga in popularity were Cher with an average 7,100 tweets per minute, Eminem with 5,000 tweets per minute, and Rihanna with 4,700 tweets per minute. Rounding out the top 10 were Ke$ha, Paramore, Taylor Swift and Kanye West."
Source:  News item on MTV.com, 13th September 2010