Check out below in bold - apparently not so legal creativity? LAME

Section 4. Publicizing a Promotion on Facebook

You do not need our prior written approval if you are publicizing a promotion that is administered completely off of Facebook. However, we may remove any materials relating to the promotion or disable your Page or account if we determine that you violate these Promotions Guidelines, the Statement of Rights and Responsibilities or any other of our policies. If you publicize a promotion in any way on Facebook, in addition to the other terms and conditions contained in these Promotion Guidelines, without limiting your other obligations you agree to the following:

4.1 You will not directly or indirectly indicate that Facebook is a sponsor or administrator of the promotion or mention Facebook in any way in the rules or materials relating to the promotion.

4.2 In the rules of the promotion, or otherwise, you will not condition entry to the promotion upon taking any action on Facebook, for example, updating a status, posting on a profile or Page, or uploading a photo.”