I was wondering what is everyone opinion on doing a 301 Redirect or 302 Object moved command for your domain name without the www? I am seeing more and more people setting up these commands for the domain name without the www. I assume this is to basically let the engines know that the primary domain is the one WITH the www and the IBL value should be weighted on the www domain only. This should also avoid the search engine using the domain without the www in the search results which can be a nuisance as well.
For instance do a header check for this domain, Intranets.com.
So why are not more of us doing this?