netmeg - 3:22 pm on Jul 26, 2010 (gmt 0)

See, there's no clarifications on these questions, and that's why I don't do it.

Technically, www and non www are different urls. And yahoo.com and its IP numbers are different urls. So you have to come up with every possibility for every site, not just your own, but caches and translators (if you want to go that route) and if you've got even ten sites (let alone a hundred) it's just impossible to manage.