Basically, I've seen people asking for something similar to this plugin; so I decided to make it.

With this plugin, your users will be able to set a price on content hidden with [hide] tags, and people will be able to buy it with the Newpoints currency.

Currently, the hide tag has three different states:

Pay to view:

[hide cost="1337"]
Pay to view this content.
[/hide]

With this state, users can set a price on their content; and when a buyer purchases the content, the owner gets the points that the buyer paid.

Reply to view:

[hide]
Reply to view this content.
[/hide]

When a user doesn't set a price on their content, the content is hidden for users until they reply to the thread.

Login/register to view:

When a user isn't logged in, they're prompted to either login or register.

Want to give your hidden content a title? You can do that too:

[hide cost="1337" title="super secret content"]
Pay to view this content.
[/hide]

Still not convinced? Here's some more things that make this plugin great:

1. Clean and commented code.
   
2. Easy to install and use.
   
3. Secure.
   
4. Easily customisable (the hide tag wrapper is stored as an editable template)
   
5. Easily configurable:
   
   

Submit pull requests and issues on Github: https://github.com/neko/lock