Cameron Moll and Brian Fling have written the third part of Mobile Web Design: Tips & Techniques. This part covers two different approaches to designing websites for mobile devices: Handheld stylesheets and Mobile-specific sites.

Cameron have established a Markup Test Pages to test different features on mobile and how it works. I have already made such tests before and the most things that I’m still worrying about are javascript and stylesheets. Because both are available on many mobile browsers but limited and I don’t have a full documentation about them.

About mobile device detection I have already noticed some websites that display special content for my nokia 6630, I’ll try to see with details their techniques to detect smartphone devices. Anyway the article is very interesting you may certainly have a look.