coComment is a web-based service that allows users to track and manage conversations in which they participate on the web. It is designed to help users follow conversations that occur on blogs, news sites, social networks, and other web sites. Users can use coComment to keep track of comments they have left on different sites, follow conversations they are interested in, and engage with others in the discussion. The service also allows users to filter conversations based on topics, keywords, and authors. Additionally, users can also receive notifications when someone responds to their comments, or when new comments are posted on topics they are following.