What is very common is that after a fight or argument decide the kill another person, But not before lock to stop there with our friends. But the problem is that when we were friends many of us do not know how unlock these people blocked, why in this tutorial will teach you unblock people on Facebook respectively.
But people unlock Facebook is not difficult, in fact you only have to go to the option Privacy Settings. Once there, you will need to click the option found at the foot of the page and then in the center, Block List.
From there you can unlock people who have previously blocked.