Many users describe the popular social networking sites as addictive, which is why they say giving up these 21st-century temptations is a sincere sacrifice. Members on both sites create profiles and add each other as friends. They can also share messages, photos, videos and personal blogs.
to read more, visit: http://www.cnn.com/2007/TECH/internet/03/29/no.facebook.lent/index.html