Facebook has revealed its online population has just hit the 300 million mark.

In a blog post, Facebook boss Mark Zuckerberg says: "It's a large number, but the way we think about this is that we're just getting started on our goal of connecting everyone".

The social networking site hit 200 million in April 2009, following its launch as a campus tool 5 years previous.

More importantly the site is now "cash flow positive", ahead of its 2010 goal to be so.

Zuckerberg ends his post with: "We thank all of you for helping us reach the point where we are connecting 300 million people, and we hope to serve you and many more people in increasingly deep and innovative ways in the months and years ahead".