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the advantage is that you can update your site by logging in at a central site and post the news while you are on the move - without having access to anything but the internet.
more seriously, some parts of some sites automatically update because they are "stealing" from XML streams etc., some sites have multiple/public editors, and for the rest they are never much updated anyway. i kind of think it's good to design a site to stay fresh while you're on holiday - because then you'll have less work to do to keep it fresh when you're at home :D
The best Solution to content updates?
PHP/MYSQL and a couple of days of work and you've got yourself a content management system which anyone anywhere could update with about 10 mins instruction. It's what i've done for various client, just remeber to factor in the cost of the system that they'll be coming to you less often for updates.
Other countries are another story. There are products that allow you to access your computer from anywhere in the world, but I haven't tried it. Nor have I looked into it in any depth. Nor am I into Wi-fi yet.
One thing I wonder about is - What if your computer freezes and ctrl/alt/delete doesn't work? Is that the end of remote access?
If anyone has any experience with this, I'd appreciate hearing about it.