Your profile being disabled may have been unfair. However some of the examples you cite from Google make sense: "Facebook just disabled my account. I started a group for people with the same last name as me and i started sending messages to people with the same name to join." "I added a number of friends from my College because of the mere fact that people in the same school should know one another." "My account was…
Is Facebook unaware of Nagle's algorithm? It is trivial to reduce bandwidth by batching notices. You could even set the maximum frequency yourself. Or is this not implemented because it would make the service less addictive and less viral?