If someone would fund it, I would establish such a site, and open it up to a group who want's to maintain its content. To do it right would not be cheap, but not that expensive. The key thing is to do our own hosting, so anyone who complains (and once it became successful there would be people who would use the federal bureacracy to lean on any hosting ISP) would have limited leverage.
Probably use something like a modified "Twiki" type site so that a large number of authorized people could post.
Probably use something like a modified "Twiki" type site so that a large number of authorized people could post. That sounds like a good idea, expose businesses hiring illegal aliens and have a message board people could post to. There may be some web sites already up doing this sort of thing, I'm going check around to see first.