Cadmus is a real-time service that manages your stream (Twitter, FriendFeed and RSS) by displaying the most relevant content since the last time you checked in. It helps you get caught up on what you have missed.
Ever wanted to see the entire conversation surrounding a post? Now you can! This simple bookmarklet will load comments from Twitter, FriendFeed, Digg, Reddit, HackerNews and any blog mentioning the article and will load it in a handy sidebar.