A Social Network Where You Can Be Too Social

For many, Facebook has become an indispensable tool for managing their social lives. But all the friending, messaging and poking on the online social network has created a hazard: using it too much. Some people have been kicked off the popular site for adding too many friends at once; sending too many messages; joining too many groups; or "poking" too many friends, a casual greeting on the site. Shunned Facebookers said the punishment contradicts the site's core mission -- to help people connect and communicate.