Fight flaming on WordPress blogs.
The biggest problem with online debates is that each side gets their impression from the inevitable chunk of loud idiots or outright trolls on the other side. Now not only can you inform others of what you consider "your side", you can inform them of what you consider theirs as well--which you might well have gotten wrong, and now they can tell you.
When a supported site is detected, the Deflame icon will appear in the address bar. Click to get agree/disagree/ignore on each comment, which indicate how you feel about the author of the comment. Click again to remove all "ignored" comments and add a table of who you (dis)agree with at the top of the page. This comes with a short link to a version hosted at defla.me so you can show other commenters how you see the conversation.