Does Facebook Fan-Gating Hurt Facebook Engagement?

Fan-gating is accomplished by creating two versions of a tab on your page—one that’s shown to users who already Like your page and one to those who have not Liked the page.
The non-fans are encouraged to Like in order to “unlock” the content behind the tab. Because information about whether a user has Liked your page is easily accessible through Facebook’s Graph API, it is relatively easy to implement a gate, or “reveal tab” as it is sometimes called. There are many companies that provide tools to do this and a list of some of them can be found here.
The reason to fan-gate is fairly obvious: to increase the number of Likes by making it a requirement to access something that is presumably desirable to your fans. This could mean access to download a white paper, receive a coupon or participate in a contest.
However, this begs the question of the value of a required Like. Should this individual be considered a true fan? Is he or she likely to remain engaged with your brand after accessing whatever content you have gated?

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