I pretty sure its illegal for a host (unless they list it under there TOS) to give bad customers information (name/address email etc..) to a third party (for example a site which lists scammers and email abusers etc)
But i do think this is a good idea while others will complain.
I am wondering if a site can be legally created to just check (when they sign up/order) and see if the customer is bad and if so put tell the provider warning=1 or whatever but instead of a public database it will only check and give a warning or not? and in the database side it will only show sha256 encrypted name, email, paypal address etc of the bad customers.
I am wondering if the service only gives a warning=1 type message response if the customer is considered a abuser or scammer would it be legal? or would the providers still need the customers consent to send to there info to a third party database list?
I might sound confusing im sorry - just have millions of ideas in my head right now.