I’ve been putting off posting on the .mobi top level domain. I’m not sure yet… I do agree with Russell Beattie on his points of why its a “good thing”. Having a standard is very useful, as Russ points out, to be able to know that you can go to yoursite.mobi and have a mobile page formated correctly for your device.
It’ll be nice if it all works - sites need to adopt this for it to really become useful, and of course, every site needs to purchase another domain. This is the part that I really have an issue with. Why not simply have your site automatically reconfigure the output based on the resolution or browser string? Guess that makes too much sense.