You need to put the popular tags widget on the categories sidebar and use the custom css/js from the other thread.
Is there such a plugin for sharing content before viewing it?
if there is no such a plugin, how much will it cost to develop one?
Can you rephrase the question?
@metalkramp I want to lock/hide the content and make it available unless the visitor share it. there several wordpress plugin which they can do it.
I hope my question is clear