Entity Systems

What does /prog/ think about Entity Systems?

http://t-machine.org/index.php/2007/11/11/entity-systems-are-the-future-of-mmog-development-part-2/
http://t-machine.org/index.php/2007/12/22/entity-systems-are-the-future-of-mmog-development-part-3/
http://t-machine.org/index.php/2009/10/26/entity-systems-are-the-future-of-mmos-part-5/

This is an old idea. It's really just Model-View-Controller with a different name and a slightly different spin.

Game object or game entity systems have been in use in game engines since the 90's. Hobbyist game developers talking about it in their blogs or on gamedev.net seem to think it's cutting edge stuff, but it's not at all.