Reasons Your Facebook Account Will Be Disabled ....

1.You didn't use your real name. Facebook will find you and spit you out.
2.You joined too many groups. (The maximum limit is 200 groups per user.)
3.You posted too many messages on a wall or in a group. E.g. Guy Kawasaki had his account disabled–in his case for “excessive evangelism.”
4.You posted in too many groups, too many user’s walls. (That’s what spammers do, silly.)
5.You friend too many people. (Not so long ago this was a prime cause of disabled accounts, but Facebook has instituted a maximum of 5000 friends that should protect you from yourself.)
6.Your school/organization affiliation is doubtful.
7.You’re poking too many people. (Beware the odd FB app that pokes on your behalf.)
8.You advertised your app on wall posts.
9.You used duplicate text in multiple messages.
10.You are a cow, dog, or library.
11.You are under 18 years old and not part of a High School group.
12.You wrote offensive content.
13 You scraped information off Facebook. E.g. Facebook bots disabled Robert Scoble’s account.
Here are more possible reasons your account may be deactivated:
You send “too many” friend requests in one day/session.
You make “too many” wall posts in one day/session – especially with verbatim content and with links.
You copy and paste the same friend request message “too many” times.
You send too many identical emails to individual friends and/or friend lists*.
You message your Group members “too many” times.
You message your Event invitees “too many” times.
Recommended Action Steps:
Take your time to build up a strategic network of friends on Facebook.
Focus on quality, not quantity.
Send no more than approximately 20 new friend requests at any one time. Also, be sure to mix up the friend request messages.
Use your own opt-in email system.