In our eternal quest to be ranked number one in every search engine everywhere (ok, just 3) I was curious about third level domains. I was considering switching from www.newcomputer.ca/upgrades.htm to http://pc-upgrades.newcomputer.ca. How does this affect the search engines. Better or worse.
It would give you a little big of a leg up in rankings if someone was searching for pc upgrades, in the same way as your rankings will be helped for 'new computer'...