A proxy acts as a middleman between you and Facebook. You enter a proxy website's address, then access FB through it.

Free, no installation needed. Cons: Often blocked by networks; no encryption; can be slow and risky for passwords. Examples: HideMyAss, KProxy (web-based).

: Unblocking does not automatically restore a friendship. You will need to send a new friend request if you wish to be connected again.

Tor bounces your traffic through multiple volunteer-run servers worldwide, making it very hard to block or trace.

: In the Block users section, you will see a list of everyone you have previously blocked.