If we're looking at motivation for continuing with a game, one aspect is the role of the narrative in the game - something more to think about?

http://www.gamasutra.com/features/20060426/noyle_01.shtml

Thought I'd pass this press release on since it might be of interest:

SeriousGamesSource.com

The creators of the Serious Games Summit announce the launch of a new
web site dedicated to encouraging growth of the Serious Games movement
-- SeriousGamesSource.com.

SeriousGamesSource.com includes the latest news and in-depth features
covering this emerging segment, as well as a unique membership
community.