I would like to request to add a feature to suggest visitors to LIKE a facebook page besides the available Social Sharing features.
I understand that FB do not allow Like-Gate... well, a turnaround to this could be: Suggesting visitors to LIKE instead of a requirement or with a bonus incentive. This can be something like: http://blog.rewardsfuel.com/facebook-suggested-like/
Having a Suggested Like feature can help increase a Business Page (that hold the contest/giveaways) Likes as people may Like it just by seeing the button available there. An added value besides sharing.
Hope this will be in consideration to be implemented.