Cheers & jeers system for commenting on others' blog posts in one's own blog; a way of conveying support (or disdain) for a blog post without having to write a full-blown post, and ensuring that the cheer or jeer is tracked back to the original site.

The goal is to reduce the echo chamber factor in the blogosphere while still allowing the politically/civically useful phenomenon of indicating some level of public support for a given idea or post.