Zynga is a bullshit company, they know it, we know it, but in the real world the people playing their games really don't give a shit as long as they can earn one banana per click. So they keep clicking, over and over. Welcome to the real world of internet marketing.
All in all it certainly looks like the "glorified slot machine" formula of "social gaming" is dying, and that is immensely gratifying to me.