Jakob Nielsen Discussed How "Multiple-Location Web Users" Influence Design
About a month ago, Jakob Nielsen published an article on UseIt.com discussing the phenomenon of "multiple-location web users" and how their unique needs should influence the design of web sites. Among other things, sites need to recognize individuals instead of computers. This means that cookies are not a long-term solution for personalization. Sites should also preserve settings across more than one computing device.
What would you think if Amazon.com recognized that you were using their sites from two separate machines? Would that please you, or would it bother you? Interesting question....