Against neck and shoulder pain in general, you should see a good ergophysiotherapist I think. You'll get individually suited exercises that help you relieve your tensions and build strength and circulation in the affected areas. You seem to understand that the problems aren't situated in one spot or two but involve everything from the large muscles down to the smaller ones.

Chiropractism won't usually be all that good against this kind of problem. Nor will eroticism, which, admittedly, has other possible benefits.  :)

I totally agree on the warm-up regimen, but I never use it specifically before typing (because I'm not that organized I guess). I use it whenever I have a chance, instead. Roll joints, do a few "fake tai chi" or even "fake wushu" ('kungfu' for the uninitiated) moves, that kind of thing. It feels great.

You've detected that I am an Internet addict that spends way too much time at the computer, not enough time exercising or experiencing eroticism.

Assuming that I'm not the only one who spends 7 hours at the computer a day, I'd have thought I wouldn't be alone.

I have seen a physiotherapist and I'm much better than I was, I'm slowly beating it - used to be on pain killers every day, and for a few months I could do nothing but lie down.  It wasn't nice not being able to work in the field I was accustomed to.

The one thing that thrashed me more than anything was using a laptop - be warned it creeps up on you!  I finally picked up touch typing hoping that it would stop me drooping my head - 10 minutes on a laptop and the pain comes back fast and strong.

For laptops, I do recommend the Wide Angle mod (found elsewhere under the admittedly hopeless name WideISO1a1b)! Saves your left-hand wrist from contortions, lessens right-hand pinky leaps and gives your shoulders just a little more room. All in all, a winner I think and a mod I use daily.

As with Colemak itself, sometimes it gets annoying to sit down at someone else's computer for a few seconds. And it's marginally silly to incur a symbol key in the middle of the number stretch. But all in all, it's not hard to learn and use I think, and it feels really comfortable.