BackType
A Single Function SiteDescription:
BackType is a service that lets you find, follow and share comments from across the web. Whenever you fill out the “Website” or “URL” field in a comment form when you publish a comment on a blog or other website, BackType attributes it to you. BackType gives comment authors a profile featuring all the comments they’ve written on the Internet. If you don’t have a website to use when you fill out comment forms, BackType provides you one when you sign up.