Oh bummer! And here I thought I was going to get a prize or something. :)
Dude, you missed the point. You don't have to change their existing historical domain, you can easily market the non-the version and just 301 it. If you wish to do it the other way around, that's your choice and it would be in your best interests to describe to the client what they are about to go through when you make this change. There will be a substantial loss of traffic for a bit of time while things get recalculated.
Hmmm, I have a feeling we may end up seeing ya' in our technical forums after all this is said and done with. You make it sound easy?
Hey, if the advantage is that great and outweighs the cons of this type of change, then by all means, go for it. Just make sure you have a contract that covers your arse in case things don't go so well.
There is only one way to do it, you map all the old URIs to the new URIs via a 301 permanent redirect. Boom! That one sentence should answer your original question without us explaining all the pros and cons to ya, how's that?
Oh, and my skin is fairly thick. I can take a good punch anyday. :)
How long ago was that? And, if you're a FaceBook, you can do pretty much anything you want and recover in no time.
[edited by: pageoneresults at 5:40 pm (utc) on May 14, 2008]