MMORPG: How can we make people play less?

I wrote an article about MMORPGs. Long story short:

This article deals with my thoughts on online multiplayer role playing games that push the player to stay hours and hours in front of the screen and make him lose contact with real life and relatives/friends. Since this behaviour is obviously wrong, this article proposes some ways to actually force the player to play less time. This is done by incorporating elements that makes the player lose if he plays too much. Further, a number of proposals are made to make the player feel "rewarded" as much as he is by playing other MMORPGs.

To read it:
http://www.notesongamedev.net/inspiration/play-less/

Careful: it's long.