I have updated my listing of Mobile Market Research to include some research from the last few months. Some of the older links from as far back as 2004 no longer work. However, I have kept them because the titles hold some information.
It’s also often possible to use the WayBackMachine to find the original article. (Right click a link and do ‘Copy Shortcut’ in Internet Explorer, ‘Copy Link Location’ in Firefox, ‘Copy link address’ in Chrome and paste the address into the WayBackMachine.)