heini - 10:43 am on Apr 24, 2003 (gmt 0)

>A robot doesn't know you own all the sites
I'm not so sure if Google has not found a way to automate advanced whois data lookups by now.

Second judging from what we see here in the travel industry Google spam reporting is business as usual.

So if it were me I would not even try to hide the fact it were my sites. I would however make all sites so that they can stand on their own two feet (how many feets do websites have, actually?), meaning get them all independant links. What I would try to avoid is setting up a closed circle.