Paul Boutin has conceived A Grand Unified Theory of YouTube and MySpace
"YouTube and MySpace are runaway hits because they combine two attributes rarely found together in tech products. They're easy to use, and they don't tell you what to do."
That's it. Easy to use and don't tell you what to do. It's not rocket science but it is oh so rare.
Update: The Register is reporting on some recent quiet changes to the MySpace terms and conditions of use. New terms:
"By displaying or publishing ("posting") any Content, messages, text, files, images, photos, video, sounds, profiles, works of authorship, or any other materials (collectively, "Content") on or through the Services, you hereby grant to MySpace.com, a non-exclusive, fully-paid and royalty-free, worldwide license (with the right to sublicense through unlimited levels of sublicensees) to use, copy, modify, adapt, translate, publicly perform, publicly display, store, reproduce, transmit, and distribute such Content on and through the Services. This license will terminate at the time you remove such Content from the Services. Notwithstanding the foregoing, a back-up or residual copy of the Content posted by you may remain on the MySpace.com servers after you have removed the Content from the Services, and MySpace.com retains the rights to those copies."