Disqus, a social commenting system to be integrated into blogs and the like, has its success story. The system is serving over 200 million users each month, which means the service is larger than Twitter and has a reach of at least a third of Facebook. Within the last six month Disqus has doubled its traffic and became the 4th largest US network. Now the service is coming up with a new version and api interface. To get some further insights read the article below.
Now Over 200 Million Users A Month, Disqus Gets A New Look, Premium Add-Ons, New API
Directory Sources: Social Media – Comment Systems, Social Networking