A recent study from comScore has reported that more people are adopting social networks worldwide. The familiar networks like Facebook and MySpace are gaining users. But there are other social networks that continue to pick up traction and attract users from around the world. Growth in Europe, Asia, Africa and the Middle East highlight how integral social networking has become to the daily life of millions of people. Check out the year-over-year growth for these social networks and consider joining one you haven't heard of before.