Alexa now shows all the sites you own!
 

Does anyone know where they are grabbing this from ? Is it the WHOIS contact info ?

Found it...

Question
How do you determine Other Sites Owned?
Category: Traffic and Site Stats

Answer
When Alexa finds one or more sites with the same domain registration information as the site you're viewing, we list those sites in the left sidebar under "See other sites owned."

I may have gotten around this by putting spaces and other characters inbetween the letters in the address of the whois info.

So the human eye can read a valid whois address. But the bot that collects the info can't easily match like for like.

I believe this to be purely address based, as my wife's sites appear next to mine on there. So it ain't the name that they make the connection with.

cheers Urb. I will give that a try