One of the reoccurring ideas in revisions of the desktop is to tie it more closely to the Internet. The idea was last popular in the late 1990s, when one example of it was the use of KDE's Konqueror for both web browsing and file management. Now, with the GNOME Online Desktop (GOD), the idea has been revived to reflect the rise of social networks and file sharing. The revisions to the standard GNOME desktop are easy to learn, but how you view them will probably depend on how much you participate in the phenomena they're designed to accommodate.
Currently in alpha release, GOD is best tested in a distribution that uses GNOME 2.20, such as Fedora 8. In Fedora 8, it requires three packages: online-desktop, mugshot, and bigboard (the exact names may vary with your distribution). If these packages are unavailable in your distro, you can use the instructions at live.gnome.org to compile the programs for yourself.