Quite a few of the clients I have worked with lately have asked about implementing Gated Content. Not Gated Pages – preventing access to pages requiring an account and roles but gated areas on an actual page. Essentially requiring a site visitor to give up some information about themselves before gaining access to some content.
This actually a good thing in Sitecore because we can request the visitor’s email address so that we can identify them in xDB. Meaning more and more of our Site visitors will be uniquely identified, tracked and ultimately targeted with personalised experiences.
Exercising Sitecore 