These were pioneering days in the development of mobile web design. I had great fun designing these web-apps and using them. I have also successfully deployed the design to a global business. The design concept has served me well.
There applications where Adaptive Design may be a preference where the web app is custom built to run on a particular device, for example museum apps, digital visitor guides, trade-show apps, etc.
These particular Adaptive Designs still work fine on larger format mobile phones, however, if I were building a new website (or need to re-platform the remaining sites) then I would now go for responsive site design as Google prefers it.