Just to follow up (not sure anybody is reading this thread anymore though):

I've just rolled out Facebook sign in (only for those who'd like to post new jobs), manual moderation of all offers (say goodbye to "niggers" and "dicks") and email notifications (which might end up in your "Junk" folder so be sure to check it, will fix this a bit later).

Thank you all for you feedback and I hope Haltura is now more or less usable ;-)