[malnourish]

Makes sense.

What if they output in LaTeX for more complex things, and there was a LaTeX plugin for browsers?

[27182818284]

I've seen Chrome plugins and I know there are Greasemonkey scripts for automatically LaTeXing plain text on web pages.

I don't think this is a viable solution for W|A, however.

[imrehg]

MathJax for the win :)