What is the revenue model for the comments management system for blogs "Disqus"?

Disqus started revenue model some2 years ago and by default started to show content from other websites. Being a news website manager I started to have a qualm that I am losing my visitors as similar content on3rd party websites (who were actually advertisers for Disqus) were somewhat cannibalizing my traffic. They pay you for each CT, when someone clicks on content promoted on your website and visitor leaves you for some other website.However, in some cases showing similar3rd party content on your landing pages may work but in my opinion it