Business Matters: Rihanna's 'Unlocked' Facebook App Gets Her 750,000 New Followers
Business Matters: Rihanna's 'Unlocked' Facebook App Gets Her 750,000 New Followers

As Maroon 5's "Moves Like Jagger," featuring Christina Aguilera, rebounds to the top of the Billboard Hot 100, Kelly Clarkson's "Mr. Know It All" launches on the chart as the list's highest debut at No. 18. Rihanna, meanwhile, banks another Hot 100 top 10, "Cheers (Drink to That)," from her album "Loud."

Clarkson previews her fifth studio album, "Stronger," due Oct. 25, by notching the second-highest debut among her 17 Hot 100 chart entries. She began at a higher rank only with "Never Again," which arrived (and peaked) at No. 8 the week of May 12, 2007.

"Know" enters Hot Digital Songs at No. 9 with 107,000 downloads sold, according to Nielsen SoundScan. The track is likewise the top new entry on Hot 100 Airplay, where it starts at No. 65 with 17 million in all-format audience (up 79%), according to Nielsen BDS. The song rises 30-20 as the Greatest Gainer on the Adult Top 40 radio airplay chart and launches at No. 29 on Mainstream Top 40.

Clarkson premiered "Know" Aug. 31 via webcast on her official website ahead of its Sept. 5 release to retail. As the original "American Idol" queen charges onto the Hot 100, the chart's top song is again by two of the coaches - Adam Levine and Aguilera - of rival music reality competition program "The Voice."

After dropping to No. 2 last week, "Jagger" returns for a second frame atop the Hot 100, similarly rebounding (3-1) for a second week at No. 1 on Hot Digital Songs (220,000, up 6%). The song claims Greatest Gainer/Airplay honors on the Hot 100 courtesy of its 8-5 push on Hot 100 Airplay (104 million, up 20%).

Last week's Hot 100 No. 1, Adele's "Someone Like You," retreats 1-2 after soaring to the summit from No. 19 a week ago, a coronation fueled by reaction to her performance of the song on the MTV Video Music Awards Aug. 28. The piano-and-vocal-only ballad - the first such No. 1 in the Hot 100's 53-year history - slides 1-2 on Hot Digital Songs (213,000, down 22%). "Someone" climbs 19-13, however, on Hot 100 Airplay (61 million, up 33%). The song is the Greatest Gainer on Mainstream Top 40 (19-16) and Adult Contemporary (16-14), while pushing 5-4 on Triple A, 10-6 on Adult Top 40 and 35-28 on Rock Songs.

Foster the People's "Pumped Up Kicks" holds at No. 3 on the Hot 100 for a third week. The track drops 2-3 on Hot Digital Songs (193,000, down 11%), while bulleting at No. 10 on Hot 100 Airplay (79 million, up 13%).

Chart Moves: Foster the People 'Pump' up Hot 100, Rihanna's 'Cheers' on the Rise

LMFAO's former six-week No. 1 "Party Rock Anthem," featuring Lauren Bennett and GoonRock (4-4), and Bad Meets Evil's "Lighters," featuring Bruno Mars (7-5), close out the Hot 100's top five.

As Maroon 5 revisits the Hot 100's apex, the group's lead singer Levine returns to the top 10 (12-6, after rising to No. 10 two weeks ago) as a guest on Gym Class Heroes' "Stereo Hearts." The song advances 9-5 on Hot Digital Songs (145,000, up 4%) and 18-16 on Hot 100 Airplay (56 million, up 15%).

Nicki Minaj's "Super Bass" descends 5-7 on the Hot 100 and Lady Gaga's "You and I" falls 6-8. The latter title had, like Adele's "Someone," benefited last week from a buzzworthy performance on the VMAs. "You and I" drops 4-6 on Hot Digital Songs (141,000, down 19%), while edging 23-21 on Hot 100 Airplay (48 million, up 18%).

Lil Wayne's former No. 5-peaking "How to Love" rebounds 14-9 with Greatest Gainer/Digital accolades, surging 20-10 on Hot Digital Songs (90,000, up 33%). As previously reported, parent album "Tha Carter IV" spends a second week at No. 1 on the Billboard 200.

Lil Wayne Scores 12 Simultaneous Singles on Hot 100

Rihanna rounds out the Hot 100's top tier by scoring a fourth top 10 from her fifth studio album "Loud," as "Cheers (Drink to That)" ascends 11-10. The song reaches the top bracket by gaining 10% in airplay to 58 million, despite its 11% digital sales decline to 126,000. Rihanna's 19th Hot 100 top 10 follows three leaders from "Loud": "Only Girl (In the World)"; "What's My Name?," featuring Drake; and, "S&M." Two other cuts from the set have also graced the chart: "California King Bed" (No. 37 peak) and "Man Down" (No. 59).

All charts, including the Hot 100, Hot Digital Songs and Hot 100 Airplay, will be refreshed tomorrow (Sept. 15) on