The important part is the generated html code, jass that is marked up with semantic html is much easier to add to the greasemonkey script.
For example, use <code class="jass"> to markup the entire script and use <span> tags with relevant class names to mark up each keyword. Check the wiki for a somewhat good generated html.
Just tell me what sites you would want to use it on, I've no problem with updating it ^^ Though, the site must already have a jass tag since my greasemonkey script doesn't include a parser on its own but extend already existing ones (roughly...), that's why the support varies across different sites.
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.