Is this category active?

I want to submit a site to this category

http://dmoz.org/Society/Religion_an...and_Empires/Mamluk/Ibn_Taymiyya,_Taqi_al-Din/

but do not see any activity for a long time. So does this category have active editors or it is a waste of time to even submit a link there?

All categories are active.
Please read our FAQ for answers about your question related to "active editor".

How do you say it..."insh'allah"?

We don't know how any editor will act tomorrow, regardless of how they acted yesterday. But the directory is organized so that anyone who can edit the Islam category can edit any of the subcategories -- and anyone who edits Religion can edit Islam, and so on. And, of course, an editor would have to to have been fairly active at one time to get permission to edit all of Islam (or all of R&S, or all of Society). So SOME active editor can work there. And even if one editor isn't active, another editor may be, or we may have a new volunteer editor next month.

Telling someone (whoever it is who may someday be interested in Egyptian or muslim history) about this website isn't a waste of time, any more than telling anyone else (who might or might not be interested) about the same website.