blocking adult traffic at the corporate firewall
 

I host multiple sites - some adult, some mainstream, and am finding that the mainstream sites are being blocked as "adult" by many corporate firewalls, and my clients are bitching.

As you can guess, I'm sharing 1 IP.

So, I got a pile more, and plan to divide the sites up into adult or mainstream, and here is my question -

is the original IP now blacklisted permenantly on those corporate firewalls? Should I leave the adult sites where they are, and just migrate the mainstream sites to the new IPs? or after a shakedown period would the original IPs become OK? I ask because it would be a pain in the ass to mess with my nameservers.

secondly, can anyone list a site or two that I could punch in a url, and see if it comes up as clean or adult? This will be so that I know I got it right when the mainstream sites come up as legit.

Thanks

P.S. I love you Drinking Hard, thanks for giving me the clap!