The issue is that recently some mathematical orientated wikis [...] have been founded, which would strongly need such a feature.
If that's a needed feature, then I should introduce it into WikiTeX followingly:
<amsmath style="numbered"></amsmath>
The ugly hack, on the other hand, follows:
<amsmath> \end{displaymath} \begin{equation} % Numbered equations here \end{equation} \begin{displaymath} </amsmath>
I may be able to graft it into 1.1 beta; lets keep in touch on Wikitex-l.
Best, Peter