If I put someone on my block list on Facebook, will they be able to unfriend me?

What I have seen is when someone who connects to people for gaming finds that they cannot write on someone’s wall, they have been history. It depends on who it is though. Everyone reacts differently. I do not game but when I discover a wall that I cannot write on, I do not keep them on my friends list either. Simple.

If you block someone, they will not be able to find you in a search of Facebook, see your profile, or interact with you. If you are already friends and decide to block them, they will no longer be your friend.

There are settings that some people use that allow you to block people from posting on your wall, but this is different from blocking a person.

Ten Privacy Settings Every Facebook User Should Know

No you are the only one that can unblock/unfriend them

It is my understanding that if you block somebody that you was your friend on Facebook they can’t see your FB page from then on.. .In other words there can be interactions., Its like you and that person are invisible to each other,. Therefore if they can’t see your page they can’t do anything regarding your status on the social network.