>We do not keep any accounts for referrers and no
>personal info! None Zero! Zilch! You perhaps
>need to read in the "personal info" definition.

You are right that it depends on the definition of "personal info". Here's a sample:

http://extremetracking.com/open;unique?login=phonefre

time, date, ip address, kind of browser, operating system. Are any of those personal?

Since ET has this data for many many many web sites, they can start to cross-correlate by IP address to build a profile of the user at that IP address.

Collect enough info and you can correlate IP address to name, address, phone, e-mail, etc. Then you can construct a model of me based on my buying habits, entertainment choices, probable sexual orientation, etc.

I'm sure *you* don't do that. You're an artist for goodness sake! But the "Extreme Tracking" company may not be so trustworthy. If they have access to the data your server collects, then you are helping them.

Anyway, I've complained enough. Just put a bit more information on your page, ok? And continue your good work with your artists.