On: Math pastebin with LaTeX math equation rendering

[jhayes]

A similar idea is this firefox plugin, TeX the World: http://thewe.net/tex/

Pros: - Works on any site (I've only checked it out in gchat though).

Cons: - Not as pretty (if it matters to you) and requires both sides to d/l firefox extension really (not for emails though).

[cgranade → jhayes]

Another pro? It's also a Greasemonkey userscript, so you don't even need the extension if you're already a GM user.