The event is to help spread the word and for your efforts you can enter the rafflecopter for your chance to win an iPad mini.
Also, if you join the event, you're name will go in the hat for a lucky door prize. So being a part and sharing with your facebook friends gives you even more winning chances!
Every couple of days, I upload a new share image to help you gain more entries - here is the one I uploaded today. It's on the rafflecopter as a 5 entry option. Good luck!