KnockNok is a web 2.0 company that builds social networks across multiple websites, in real time, based on content. Web users reading content tagged with KnockNok’s Discussionator service can immediately engage in chat with other web users reading similar content on other websites. They can also see the content being read on those other sites.
The benefits of Discussionator are that it introduces sites to new audience members, it keeps people on site longer and it provides a new source of revenue. Revenue is generated through advertising and the company splits those advertising revenues with their partners. The service is free to setup and use.