However, it is best to careful when switching from a “www” domain to a non-www domain name, as it may temporarily result in a loss of traffic and page indexing on search engine. It has to be done with extra care. You definitely will not want to result in loss of traffic.

It doesn’t shoot down the idea. As I said in the piece, the concept isn’t to abolish hostnames — only to point the root of the domain to the main web content. And by the way, you can just do the same with your setup as well. Send the external DNS queries to your internal DNS server, and point the root to the IP address of your web content. This isn’t a discussion of eliminating options — just changing default behavior.

But the purpose is not to say what’s best for everyone, but rather what’s best for the Internet and its users in general.

While I agree with this in theory it’s going to be an uphill battle. It’s like people saying Kleenex instead of tissue … it wasn’t nipped in the bud early enough. You’d be amazed (or maybe not) at how many people think that a site address is not correct if it doesn’t have www. in front of it and that’s going to be a tough one to get out there.

Lastly if you have your www third level domain pointing at your main top level domain, what’s the point of this excercise? To save the unwashed masses from having to type www. ? Anyone who cares about SEO at all will have both addresses land at the same place with mod_rewrite or something similar, so again, what’s the point of this .. considering that more often than ot people will redirect blah.com to http://www.blah.com … which completely undoes this whole movement.