I read this on a blog but cant seem to find it in the webmaster tools section: Can anyone point me in the right direction? Brian
What if someone promoted his website as yoursite.com without the www, would rewrite work or would it be bad for SEO?
The another way is do 301 redirect from www. to non www version or reverse depend on page you want Google to index.
I use 301s for the same purpose on a wide network of WordPress powered sites with no lag. The redirect is executed by your web server immediately, there should be no added load time.
You can 301 redirect from non www to www version, but I feel Google looks at the common link format for your backlink profile and indexes that version.
its simple all you need to do is go to google.com/webmasters its in there on the left menu just need to look if you still dont find it ill send you a screenshot
Google gives you very usefull tool - http://www.google.com/webmasters/sitemaps there in "Prefered domain" you can swith to domain.com or www.domain.com. Good luck. P.S. Don't forger to vefry your website.
301 direct works for all search engines while the Webmaster tools works only for Google, if you want to be extra safe, do both. That's what I do.
submit a google Sitemap and through the Google Webmaster Central you can instruct google to cache only www domains and not non-www. Also redirect from non-www to www domains