Trick to check if Google has penalized a domain

Apparently, you can check if Google has penalized a domain or not by simply adding the word hyves as a subdomain and then checking the PageRank of that subdomain.

IE: hxxp://hyves.digg.com/ = PR7

Now there’s 3 possible PR scores you can have, and each mean a different thing.

PR7 means that the domain is perfectly fine
PR4 means that the domain got penalized by Google
PR0 means that the domain got banned in Google