On sites with TeX support, people can turn comments into full fledged posts with dozens of lines without much effort, which can be quite useful. However, there are some less-desirable pure-noise uses that can occur.
As an egregious example of what's possible:
I actually can't even click the X to delete it unless I went and tried to remove page elements with Chrome's inspector. I'm guessing there are also some mod tools there that could be difficult to click under the right (wrong) circumstances.
Is there a way to limit the feature set of MathJax in comments to thwart some of this? The annoying-formatting-factor of comments is ordinarily quite low, so non-mods not being able to edit them isn't a big deal, but all bets are off with MathJax.