WWW resolve

[Timbow]

I would Imagine that search engines are smart enough to not treat www as a seperate sub domain.

You would think so, but everywhere I look for SEO info they all say the same thing, that it looks like duplicate content.

Checking a newly set up site here
http://www.ragepank.com/redirect-check/
I am getting four 200s and about twenty 404s, when I should have one 200 and all the rest 301s which is almost what I get if I use the htaccess lines from the wiki (actually no 200, all 301). don't know what the significance of it all is.