Because I've installed the Virtual Domains component, and the CB Lists work fine with virtual subdomains, like: newyork.site.com, paris.site.com, moscow.site.com etc...
But when I want to enter a user profile, like: site.com/profile-view/userprofile/Fred the subdomain disappears automatically.
If I explained well enought...instead of having:
paris.site.com/profile-view/userprofile/Fred
I get only:
site.com/profile-view/userprofile/Fred