Example, if someone has a previously well ranked site, it tanks after Penguin, the original owner then decides not to renew and it’s brought up by someone else when it comes back onto the market.
Is the penalty still in place for the new owner or is google able to see the domain name is now registered to someone NEW and therefore wipe the slate?
Basically, should I start screening all of my future client’s domain names BEFORE they buy them from now on? Thanks