It's my understanding that pbbans takes the punkbuster ban command from the punkbuster stream, issues the ban and then publishes it and shares it to all other pbbans connected servers. I know MD5 and PBSS are pbbans specific -- other anti-cheat sites do similar but I'm talking pbbans.
Also, it's my understanding that when punkbuster detects a cheat and issues a ban on a server that doesn't stream to pbbans that is what is called a global punkbuster ban.
Aside from MD5 and PBSS bans issued by pbbans can someone who was busted with aimbot, game hack, etc on a pbbans streaming server still play on servers that do not stream to pbbans? I saw a guy the otehr day that was obviously cheating. I looked him up on another ac site I am a member of and it showed him with an aimbot violation from a month ago. I asked in chat how he was able to play and someone said it was because that server didn't stream pbbans. It threw my whole understanding of pbbans in to a loop.
Thanks