LaTeX is a typesetting language, similar to HTML, except that rather than a "hypertext" markup language, it is a typsetting markup language, and its particular strength is mathematics.
Normally one writes their documents, say an article or book manuscript, in plain text using LaTeX markup, like this:
<font class="small">Code:</font><hr /><pre>\begin{equation}
\mu_n = \min_{\substack{u_1,\ldots, u_{n-1}\in H}} m(u_1,\ldots, u_{n-1}) \label{eqn20}
\end{equation}
</pre><hr />
Then you compile your document, which produces something akin to an "executable" document, which really means that it is simply ready to be rendered, either by a program that will display it on the screen, or to a postscript file, or pdf file, whatever.
LaTeX2HTML compiles LaTeX source into web pages, an automagically renders the mathematics into images, like this:
http://i27.photobucket.com/albums/c153/Borodog/img12.png
So what I would like to see would be an implementation that went like this:
<font class="small">Code:</font><hr /><pre>\mu_n = \min_{\substack{u_1,\ldots, u_{n-1}\in H}} m(u_1,\ldots, u_{n-1}) </pre><hr />
The ubb post processing could pick off the latex tags, run the code within through LaTeX2HTML to render an image, host it locally, and inline the image reference into the post. It would actually be fairly simple; LaTeX2HTML is all perly and everything.
That would give me a tremendous stiffy.