JUX Social Content Locker is a powerful module that helps to automatically lock your most valuable content such as video, article, link… created on Joomla Content behind a set of social buttons until users tweet, share, or like your page. It helps to improve the social performance of your website, get more likes /shares, and increase traffic. A great plugin from the JoomlaUX team.INFO
JUX Social Content Locker v1.0.0 (J!3x)