This Quick-Tip is about an issue that some people have had with their "naked" custom domain not re-directing to the www-at-the-start version, and how to fix it using a feature in your Google Apps account.
Since Blogger released their initial fix towards the custom-domain mapping problem of mid-September 2012, a lot of people have found that it's unattainable to setup the custom domain so that my-domain.xxx works in addition to www.my-domain.xxx does.
It has an choice for this in Blogger's Settings > Publishing area. But last night, after i set up a "subdomain" style entry for news.my-domain.xxx and directed my latest-updates blog from my-domain.blogspot.com to news.my-domain.com, learned that this didn't work.