Google Inside

Google Webmaster Tools (formerly Sitemaps) is now offering an additional tool which will tell Google what your preferred domain name is. Some people will link to domain.com and some people will link to www.domain.com. Some people prefer to send you to one or the other and there is an easy way to do this via a 301 redirect. I do it on most of my sites so that way PageRank is not lost anywhere. Now you can easily tell Google what you actually do prefer. Take a look at the help center for more details.