Here's one that we've been scratching our heads over for a while. We run a number of UK ISP sites which are
www.12free.co.uk and
www.freeukisp.co.uk
We want to track visitors through from hitting the site to conversion to sign up for the full service, ie, they get free email address hosting etc and install our dial up number on their PC. Now when they go through to the sign up pages
http://signup.freeukisp.co.uk/
You will notice that it is on a diferent subdomain
We tend to use either hitslink or Google analytics.
Any ideas how we can do this bit of tracking?