Facebook has now hit its 200 million members mark… to put that into perspective, that’s like, the population of Japan.

In less than eight months, the social networking site doubled its membership numbers, surpassing its competitor Myspace. Over 50% of its users log on to Facebook at least twice a day, with the fastest growing demographic being 35.

To celebrate its 200 million milestone, Facebook have created Facebook For Good, a page devoted to user-generated stories about how Facebook has helped people give back to their communities.