I think it could be nice to have commands on TeX.SE for writing TEX, LATEX etc. in the same style as in TeX documents. In my opinion, these styles are part of the spirit of the TeX community and therefore belong on TeX.SE. Yes, I know, it is completely useless. Yet it should be even more completely trivial to implement, so why the heck not?
I know my attempts above were horrible-looking, but Wikipedia proves it can be done beautifully with some simple CSS.
<span class="texhtml" style="font-family: 'CMU Serif', cmr10, LMRoman10-Regular, 'Nimbus Roman No9 L', 'Times New Roman', Times, serif;">T<span style="text-transform: uppercase; vertical-align: -0.5ex; margin-left: -0.1667em; margin-right: -0.125em;">e</span>X</span>