Well I had just repartitioned, formated, installed XP yesterday (normal yearly maintance)
I had not yet sorted through processes or start menu yet.
Game booster took my 30 processes down to 23 quickly, easily, pain free.
I'd say for those who are afraid to mess with processes, or don't know what they can safely do it makes a viable alternative.
I'll try it for a few days and see how it fly's but it looks pretty decent to me.
If nothing else it makes a pretty decent tool to show people what they can safely shut down, get rid of.
Although in my opinion nothing beats a lean clean machine.
I'd also say that in my opinion its much easier for someone to setup and run than fsautostart.