Rendering maths from a web page

Occasionally I do pretty math intensive coding.
And one of the best pieces of software for writing about maths is TeX.
It was written by one of the gurus/fathers of modern computer science in 1978, and is still in use all over the world. So when it comes to putting math on the web, it used to be a workflow like this

• render math using tex
• copy and paste somewhere
• add an image link to your docs.

However some clever people have made that process so much easier: Two efforts in particular look very nice

• TeX Formulas - from the Google Chart API
• MathJax

Heres some mathjax : $ \nabla \times \vec{\rho} = 0 $
Heres the same thing using the google api:

I think the mathjax is nicer, but the google charts version is easier to integrate.