I used to think "oh, cell phones are getting better so there won't be a need soon." I lumped it into the fad group.
BUT
Cell phone screens aren't getting that much bigger ... so "mobile sites" will always be a good thing to have. No matter how advanced mobile browsers get, stripped down sites that give you want you need will always perform best on mobile.
I do the same thing as xenigo does when it comes to FB on my phone ... m.facebook.com is the best.
For everything mobile, head over to
The Mobile Broker.