If you have obstructed someone unintentionally or altered your mind about the block, however, it is also reversible. You can alter your Privacy settings to unclog and allow somebody back into your Facebook world.
How Do You Unblock Somebody From Facebook
1. Click the down arrow next to "Account" on top right of any page on Facebook.
2. Click "Personal Privacy Preferences" from the Account menu.
3. Click the "Edit Your Lists" link under the Block Lists heading. It is at the bottom center of the page.
4. Click the "Unclog" link next to the name of the person you wish to unblock. A list of individuals you have actually blocked is discovered under the Block Users section.
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Uncloging somebody does not instantly put that individual back in your pal list. You should add the newly unblocked individual as a friend and wait on them to verify the request.
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