Kendrick Lamar , who opened atop the R&B/Hip-Hop Albums chart this week with "good kid, m.A.A.d. city," strides onto Billboard's Social 50 chart at No. 47. The debut comes after a busy week of social activity for the rapper, who also entered at No. 2 on the Billboard 200.
The Social 50 chart ranks the most popular artists on YouTube, Vevo, Facebook, Twitter and MySpace, using a formula that blends weekly additions of friends/fans/followers along with weekly artist page views and weekly song plays.
The surge in social activity was undoubtedly sparked by the release of his album, "good kid, m.A.A.d. city," which dropped during the charting week. However, Lamar is not new to the game, as he released the indie sets "Overly Dedicated" in 2010 and "Section.80" in 2011. Thanks to his steady growth over the years, he's been able to draw a significant online following: 750,000 people follow him on Twitter.
Lamar is also part of the hip-hop group Black Hippy, additionally comprising Schoolboy Q , Jay Rock  and Ab-Soul . Those three each have more than 100,000 followers to their individual Twitter accounts and all were actively promoting Lamar's new album last week.
The promotion helped amplify Lamar's overall weekly fan acquisition by 103%, adding 122,000 new fans to his Twitter and Facebook pages. Additionally, 1.7 million YouTube views (a 43% increase) contributed significantly to his position to the tally. Lamar also added 2.5 million views to his more recently minted VEVO channel, which features exclusive performances and behind-the-scenes interviews as a part of his participation in the VEVO Lift program.
JESSE AND JOY RISE: Elsewhere on the chart, Mexican pop duo Jesse and Joy  continue to increase their standing on the tally, rising 48-45 in their third week on the chart. They accrued over 136,000 overall fans (a 22% increase) last week after commercially releasing the single "Llorar" featuring Mario Domm. They soon followed it with the official lyric video on Oct. 25, which has since received more than 200,000 views on YouTube.
THE XX MARKS THE SPOT: The xx  re-enter the tally this week at No. 30, channeling momentum from their video "Chained," which debuted two weeks ago as a part of a collaboration with the Creator's Project. The group performed the track from their most recent album, "Coexist," on NBC's "Late Night With Jimmy Fallon" during the charting week as well. That helped secure their re-entry, along with the addition of 100,000 new fans across Twitter and Facebook.
MARS' 'SNL' IMPACT: Bruno Mars  continues to gain as well, climbing two positions (14-12) after appearing and performing on NBC's "Saturday Night Live" at the start of the charting week. During the week, Mars debuted the cover art for his upcoming album, "Unorthodox Jukebox," which aided in his acquisition of 154,000 fans on Facebook (a 36% weekly increase) and 141,000 fans on Twitter (only a 3% weekly increase).
The top 10 on the chart remains relatively unchanged this week as its two Schoolboy signees PSY and Justin Bieber remain in the Nos. 1 and 2 spots, respectively. Taylor Swift climbs (4-3) upon the release of "Red," bumping Adele down (3-4). Pitbull shuffles (10-5) as Katy Perry and Rihanna remain steady at Nos. 6 and 7. Jennifer Lopez re-enters the top 10 (13-8) as does Shakira (12-9), causing One Direction to tumble (10-8).
- News