Michael Jackson was the King of Pop, but Justin Bieber is the reigning Titan of Twitter. According to analytic.topsey.com, the dynamic young singer is the most popular subject on Twitter.

Not this week.

The sudden feud between Ann Romney, wife of presumptive GOP presidential nominee, and Democratic pundit Hilary Rosen, drew more Twitter traffic than Bieber, reports FoxNews.com:

Twitter traffic mentioning Romney spiked from 9 p.m. to 11:30 p.m. Wednesday from essentially zero to 3,000 tweets, then soared Thursday morning from less than 1,000 to about 6,800 before leveling off in the afternoon, according to analytic.topsey.com.