DISQUS is a popular commeting system that you can use instead of your boring standard one. DISQUS gives you many wondeful things but with the help of the uberVU API you can also get the comments, mentions and reactions from popular social sources like Twitter, FriendFeed or Digg and display them under your regular comments.

Mashable is one of the top blogs in the world when it comes to social media coverage. They were the first to aggregate the distributed comments around their stories and display them under their regular comments

gReactions is a Firefox plugin that enhances Google Reader. Once installed, gReactions shows comments from all around the Web under each blog post. They’re using ContextVoice to provide this service.

uberVU is a web application that allows users to easily search through whole conversations happening on the Web. Users can search for keywords or URLs and uberVU displays results as whole threaded conversations with analytics on top.

TechCrunch named this Twitter Client / Feed Reader ithe best browser based solution we’ve seen. They’re using ContextVoice to gather comments around the feeds that their users read, , as well as around every link within any tweet in Twitter
timelines.