I've finally added a nice little feature to the mathstodon.xyz web frontend: while you're typing, LaTeX math macros will be replaced with the corresponding unicode character.
So I can write something like "the area of a circle of radius 3 is π × 3²" very easily!
MathJax still works, between the delimiters: \( π \times 3^2 \)
This is based on the list of Unicode replacements from http://www.unicodeit.net/ by Sven Kreiss and Kyle Cranmer.
I found myself switching off to unicodeit to get symbols, usually × and π, so often that I wanted to integrate it with the Mathstodon frontend.
A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.
\) for inline LaTeX, and
\] for display mode.