14/02/2012 10:08 GMT | Updated 14/04/2012 10:12 BST

Play Angry Birds On Facebook

Great news productive members of the working public who by no means waste a vast amount of time on Angry Birds! Angry Birds is now playable on Facebook!

In case you don't already spend enough time playing Angry Birds on your phone, or like David Cameron, you've completed it, there's a whole new outlet for your bird-flinging.

As you would expect, the new Facebook Angry Birds brand promises new power-ups and levels you'll only find on the social network.

It's free to play initially, but not to win. The power-ups will cost you US $1 for 20 uses, according to Techcrunch.

The new game is a great example of how Facebook can justify the US $5 billion asking price for its recent share float petition.

Facebook has 845 million users, and Angry Birds had 6.5 million downloads on Christmas day 2011 alone, and soared past the 700 million download mark early this year.

If just half of Facebook users power up in the new Angry Birds Facebook version, that's a tidy 400 mill in the bank for makers Rovio.

Play Angry Birds on Facebook now.