First, you should get acquainted with Facebook's Statement of Rights & Responsibilities. We know, it's a long document but it contains important guidelines on what you should and shouldn't do on the world's biggest social network.
[More from Mashable: Zuckerberg vs. Google [COMIC]]
Why Was My Account Disabled?
Often, the reason your account was disabled is an inappropriate photo you've posted — nudity of any sort is a big no-no on Facebook. Hateful comments are also frowned upon, as is impersonating others, using fake names and unsolicited contact with other users for the purpose of "harassment, advertising, promoting, dating, or other inappropriate conduct."
Your account may also have been blocked. This means it hasn't been completely disabled but you cannot use certain features, such as sending friend requests or messages. The block is temporary, but Facebook will not lift it for any reason, so you should just wait it out and try to inform yourself about what you may have done to cause the block and try not to repeat the offense again.
[More from Mashable: 42 New Digital Media Resources You May Have Missed]
Also be aware that your account simply may have been hacked or compromised by a third party, causing Facebook to disable or block your account if they posted inappropriate content.
Fixing The Problem
If your account has been disabled in error, it's time to take action. The first thing you should do is fill out this form, which is available even if you're not logged into Facebook.
You can also try sending an email to [email@example.com] to ask why your account was disabled, as well as explaining that you are willing to remove any offending content in order to get your account reinstated.
Securing Your Account
You might want to secure your account even if it hasn't been disabled by using this wizard.
WARNING: starting the wizard will IMMEDIATELY lock out your Facebook account and you will be forced to change your password and go through several additional security measures, such as confirming that you've changed your email passwords.
We also advise regularly backing up your Facebook profile (we explain how in this guide). That way, even if disaster happens, at least you have a backup of all your data on your home computer.
For a detailed description of the steps you can take to make your Facebook account more safe and your information more private, check out our guide here.
This story originally published on Mashable here.