You also hear about people using copyrighted images on BHW while not hearing about the legality of it very often also, that doesn't make it any less illegal. Anyway, if you recreate the website based on what the archives have stored, you could run into some copyright issues if images are involved (it's unlikely, but it does happen). While this is true about text also, it's much less likely to happen unless you plagiarise an author's entire article (this is what content spinning is for).