Madonna's flurry of media activity last week sparks her re-entry at No. 8 on Billboard's Social 50 chart, her highest rank ever on the year-old tally. Her video for "Give Me All Your Luvin'" premiered Feb. 3 on YouTube, while she performed at the Super Bowl halftime show on Feb. 5. For the tracking week, she earned a 479% increase in YouTube fans and a 685% leap in YouTube views.

The Social 50 chart's rankings are determined by activity monitored on YouTube, Vevo, Facebook, Twitter, MySpace and iLike, using a formula that blends weekly additions of friends/fans/followers along with weekly artist page views and weekly song plays.

Madonna's re-entry is even more compelling because she doesn't have an official Twitter account -- the only act on the chart without one.

The diva's Super Bowl halftime partner, Nicki Minaj (who is also featured on her "Give Me All Your Luvin'" single), jumps 10-3 on the Social tally this week. She too is experiencing a Bowl-related gain, but also still reeling from her current hit with David Guetta, "Turn Me On." During the tracking week, Minaj saw a 27% jump in Facebook fans and a 10% charge in Twitter followers. Guetta also has a good week on the Social tally, as he rises to a new high of No. 4 (up four slots).

As for the rest of the top 10 this week, Adele holds at No. 1, Katy Perry is up a position to No. 2 and Justin Bieber falls back one to No. 5. Shakira moves 2-6, Rihanna shifts 5-7 and Michael Jackson is steady at No. 9. Closing out the top 10 is LMFAO, who descends four to No. 10.