To avoid all the issues surrounding duplicate entries www.example.com, example.com, example.com/index.html all resolve to www.example.com which was just fine. Alot of people type the web address into the search box of their startup page like so - Example.com without the www part. Since Yahoo made the switch to Inktomi results they've changed their formula to only return actual URL matches on domain searches. ie someone will have to type in www.example.com to find my site, Example.com no longer directs them to my page it says the site doesn't exist which isn't really good PR (Public Relations not PageRank) for my web image.
