Facebook it.

I think almost everyone has heard about Facebook by now or better yet, has their own Facebook page. Facebook is an example of today's social media and it's growing in popularity all over the world.
For all of the Facebook users out there, I found this video on Youtube which I found to point out some of the 'lesser' and even annoying parts of Facebook. You might or might not agree with them but check it out. This shows that eventhough your idea for a community might rise to great popularity, you still have to be on the lookout for improvements. And yes, I do agree with most of this guy's points.