Hello, I have made a (very) simple Ajax LaTeX editor for mediawiki. It is only proof of concept and could be a lot more improved. It does almost nothing more than show my intentions :-) and some nice greek letters and integrals. I am sending the snv patch so that you can try it and we can talk about the possibilities. I am still leaning Ajax (I am reading the book "Ajax in Action"), so, maybe there are better ways of implementing it. Please, take a look and tell me what you think about it.
Thanks, Felipe Sanches