Song Pop, the Facebook-based game where users can put their music knowledge to the test, gained a very important fan. Facebook Founder and CEO Mark Zuckerberg posted Thursday that he loves playing the game — a post that was shared by nearly 2,000 people in three hours.

According to our sister site, AppData, Song Pop has been a very rapid gainer recently. Zuckerberg’s post has helped. The game has grown by roughly 100,000 daily active users since yesterday. A blogger on Games.com thinks that Song Pop has the potential to grow as big as Draw Something, a Pictionary-like game.

Song Pop was quite thankful for Zuckerberg’s positive publicity. In response, the page posted:

On behalf of the SongPop team, a big THANK YOU to all of our first players with a special LIKE to Mark Zuckerberg. You made our day.

Want to further explore the world of games? Check out MediaBistro’s Smartphone & Tablet Games Summit — June 26 in San Francisco.

Readers: Have you played Song Pop? Are you as hooked as Mark Zuckerberg?