A Share/Post Competition is a great incentive for people to tell their friends and followers about your competition. When someone shares your competition on Facebook or Twitter, they'll receive an entry.
Entrants who share your Competition on Facebook or Twitter are not added to your MyGuestlist database. You'll need to combine this competition with a Refer a Friend, Question and Answer or Creative Answer competition to add entrants to your database.
At the end of your competition, once you've decided on a winner, you'll need to contact them. You can contact Twitter followers using a direct message, or send a private message to Facebook users via Facebook.com