Google has added a ‘preferred domain’ tool to Google Webmaster Central. It lets you tell Google whether you’d like all links to your site to include ‘www’ or not.

This may seem subtle, but it’s a long-standing problem in search engine optimization. Search engines historically see www.mysite.com and mysite.com as two distinct pages, even though they’re probably not. So if folks link to you using mysite.com when you usually use www.mysite.com, they likely don’t help.

Of course, when I clicked the ‘submit’ button I got ‘service unavailable’. Hopefully it’ll be back soon. More bulletins as events warrant…