Dan East writes: It appears that Facebook's HTML escaping has been bypassed or otherwise hacked. Currently this is being used to embed tags in regular FB posts to display gaudy animated GIFs. However this technique should work for any other HTML tags.
The user Facebook Art's wall is the current source of these annoying posts, which other FB users are in turn sharing on their own walls.
Dan East writes: Mark Zuckerberg, billionaire founder of Facebook, has decided to share some of his wealth with dedicated FB users, who were ultimately responsible for his fortune. Each time you enter the following key presses into Facebook (max once per hour) you will receive a $5 credit on your FB account (part of the advertising system): UP UP DOWN DOWN LEFT RIGHT LEFT RIGHT B A ENTER Please repost — it is for TODAY only!