since you're being deliberately obtuse, i'll spell it out for you on his behalf.
WILL USERS STILL LIKE IT, WHICH IS WHAT GETS DEVELOPER SUPPORT, NOW THAT IT COSTS MONEY?
WILL USERS STILL LIKE IT, WHICH IS WHAT GETS DEVELOPER SUPPORT, NOW THAT IT COSTS MONEY?
Growl is the #2 app in the entire Mac App Store. It has been in that position since the Growl developers first put it on the App Store weeks ago. The only thing outselling Growl is Mac OS X itself.
So, please. The next time you want to accuse someone of being "deliberately obtuse", consider that the person you are talking to might actually know what they're talking about and step back before you make yourself look silly and condescending. :)