Yes, there are many ways to increase space... either by adding another dimension, displaying only portions at a time, or even increasing the space (as with dual monitors). I think multiple desktops are very useful... first ran into this on a linux box. All of it is very interesting and seems to me that there is still a ton of innovation to be had in this area. For instance... the work that is being done by t-immersion with dfusion is pretty interesting. They call the technology Augmented Reality. Here's a link to a presentation video that I felt was pretty mind blowing and their website:

http://gprime.net/video.php/totalimmersion
http://www.t-immersion.com/

>>Yeah, 3-D desktops could be the wave of the future. Great concept... implementations are a little shakey at the moment though.
>>
>>http://www.hamar.sk/sphere/screenshots.htm
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>>http://www.sun.com/software/looking_glass/details.xml
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>>http://desk3d.sourceforge.net/screenshots.php
>>
>>...I've actually tried the XPSphere out. Works well, but it doesn't update the images of forms placed on the sphere in real time. Still was fun to test drive. The looking glass project by Sun has some pretty impressive videos.
>>
>>>I think it it is cool:
>>>http://www.akihabaranews.com/en/news_10018.html
>
>A 3D desktop is not very practical on a 2D screen. If it was a Virtual Realiry, then the 3D rendering would be more practical. IMO
>
>I find have an application that allows for multiple desktops, or even duel monitors to be an adventage in the 2D world of modern computering.