Should/Can we have MathJax on meta? It would be useful to implement stuff like this proposal.
I do know the argument that it makes pageloading slow, so I propose that it only be enabled if a post has
$turn_mathjax_on$ or something on it. I wrote a simple script that accomplishes this. There are two versions: http://jsfiddle.net/2tccA/1/ (only gives the turn-mathjax-on ability for posts), and http://jsfiddle.net/2tccA/2/ (has an uncommentable option to enable it for comments as well). For some reason, the mathjax main server is down atm, so neither of these are currently working. They should work when http://cdn.mathjax.org/mathjax/latest/MathJax.js no longer shown an error.
Unfortunately, neither of these scripts work for the editing auto-update preview. I don't think it should be too hard to code it, though..
Anyways, any comments or arguments for/against?