There's a shitload of these pages:
Google Cache:
http://72.14.203.104/search?q=cache:...n&ct=clnk&cd=6
Redirect:
http://tiger513.maido3.com/~bs6243/l/group.html
The links are safe - and working - at the time of posting.
Either you guys upgraded your Priority ID, someone is out to get you, or you're taking a big risk. Normally I wouldn't give a shit, but considering a few of my sites got knocked down due to pages like this, I'm not too thrilled.
If you have a site listed there, you might want to check your keywords.
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If you find you've been knocked down the listings due to planzo.com, be warned - its a very nasty site.
1,000s of these pages have been added to the listings. A lot redirect to malicious installs, many target non-adult keywords and redirect to adult sites, then try to install viruses or malware. So be careful when checking the serps.
Odds are they'll be auto-ganked shortly. Hopefully Google takes the landing pages with them.