the desktop metaphor in a web browser is neat, but
the first link was still downloading images after 1 minute so i closed the browser
the second link came up instantly and looked really good
for intranet applications this might make sense
for task-based site with multiple tasks this might make sense
this isn't that new of a concept - BBS software had this 20+ years ago, and extended it to the web 8-10 years ago; the metaphor was not very popular because that's not how people use the web...yet!