Say, you post a thread like http://www.reddit.com/r/AskReddit/comments/t4d6d/how_do_you_share_a_reddit_link_onto_facebook/...Then it shows up like this:
How can someone share a Reddit link onto Facebook while preserving the original title, with as little friction as possible?
facebook;links;reddit
Use the shortlink - That makes FB post like this - 