The basic requirement are:
1) a Default landing tab to my LIKE-gate, ( not the timeline )
2) A nice graphics landing page with girly look and inviting to "Like" and enter the sharing contest.
3) Once they like and enter they will be taken to a page with a sharing tag and they are supposed to share and get as many LIKES as they can from there friends. to win,
4) At the end of the day (10PM GMT) we will declare the result for the most share by the users who shared todays tag.
5) A separate Central management system for you as Admin to manage the share Tag and description etc. from the back end
6) we need to keep track of the users who "Share" your content/tag and also keep a count on them so we can declare the winner. with a Congratulations Cert with there profile inside that we post on facebook,