Well, the time has come, Facebook Timeline has been released to everyone, right now it is an opt-in process but pretty soon you won’t have a choice other than use it. Instead of fighting it, you should pay a close attention to what you have been doing and what you’ve said in the past.
Now it is the time to clean up your Facebook account. If you are one of those users who have hundreds or even thousands of friends, and you don’t even know half of them. You should consider not to share some stuff with people you don’t know. Deleting unwanted friends is an option, but doing it one at a time could take some serious time.
Luckily, there is an easier way! The only catch is that you should do this before you start using Facebook Timeline. FacebookDeletes is a Greasemonkey script for Firefox web browser that will allow you to select and delete multiple Facebook friends with just one check-box.
Once you have installed this script, visit your friends page where you are going to see a Facebook Delete Friends button. Now, carefully check the boxes of the friends you DO NOT want to delete.
Just as a note, if you are already stuck with Facebook Timeline, this method may not work correctly, at this time you’ll have to spend some serious time and do a general clean up.