Larger sites are often built with multiple subdomains like:
www.bobsfruitsite.com
secure.bobsfruitsite.com
ClickTracks Professional uses a more sophisticated session tracking algorithm that accounts for visitors moving across the multiple domains. Pro maintains a relationship between the page /index.html and the domain within which it occurs. (Analyzer cannot distinguish between /index.html across two domains and treats them as the same page).
Pro also maintains several techniques for tracking users when their session cookies disappear as they move from domain to domain.
