We have lots of MathML from the DocBook manuals for PyOpenGL.  The latest versions of the manuals are now using MathJax to provide rendering of the matrices, equations, etceteras (see, for example, the glRotate manual page).  We've previously had to tell people to update/replace their browser or install a MathML-specific plugin.  This solution will (hopefully) eliminate that need.  A single script is added to each Manual Section which includes any MathML-prefixed element.  The script is served from MathJax' CDN and "just works" (at least, that's the theory, my limited tests seem to bear it out, though).