If I wanted to post a challenge (to the challenge section), how would do this?  (ie. who should I email....?)

Thanks! =D

You go to the Challenge page and click the 'Submit Challenge' button

Do I have to be logged in to post a challenge? It seemed, that I don't. So I did submit one, but I can't see it posted. Is something wrong or do I have to simply wait?

Logged in - no.

Wait - yes. (Like fics, challenges have to be validated first. (To make sure no one submits a challenge based on someone elses fic without permission; to make sure the challenge is readable and not so full of errors that you have to guess what it says; ...) I'll try to look at it later, but my internet connection is wonky as hell, so we'll have to see ...

Ok hon, I looked at your challenge. Thing is, I don't think this is quite the right site for that challenge. I think it is only fair if all challenges posted on this site, can also be answered here. But your challenge calls for a human Spike, and we would have to reject any responses to that because we don't archive human!Spike-fics. (I know we have one or two anyway, but those are either prequels/sequels to vampire!Spike-fics, or deal with his (un)life as a vamp.)

Several other sites that DO archive human!Spike-fics allow you to submit challenges too. I would suggest you post this challenge there instead, that way the resopnse can be archived on the same site.

Well, that's ok, I'm just sorry I bothered you. I didn't realize you don't archive that kind of fics... I just haven't checked it.

Yup, vampire!Spike fics are kinda our (that french thing, what's it called again?) - well, it's what we do. And you didn't bother anyone. :-) Like I said, try one of the other archives, I'm think most of them have challenges-sections too.

Raison-d'etre.