Eminem has put an end to Lady Gaga’s eight-month reign as the most-liked living person on Facebook.

Social media statistics service Famecount says that Eminem now has roughly 8,000 more fans than Lady Gaga, who until this week had a lead of only 1,000 over the white rapper. Now both stars are closing in on the 29 million fan mark, shy by over 100,000.

Eminem has been picking up more than half a million new fans a week, but apparently Rhianna’s Facebook fandom is growing faster, making her what Famecount calls the “one to watch.”

And when Twitter and YouTube factor into the rankings, Eminem comes in third after Lady Gaga and Justin Bieber, respectively.

Readers, how do think the differences in social media rankings affect sales of these stars’ music and films?