any number it would be sufficient totalDailyDownloads or totalMonthlyDownloads
I thing for a developer this is a very important question
from developer point of view the store highest ratio DailyDownloads/NumberOfAppsInStore should be the best
from my point of view the Nokia store is the best from this point
but I want to know where WP store stands, because I cannot find any numbers but the number of apps
developers(business) would go where users are!
for example I am not convinced to develop for WP, if Adobe AIR for WP would be available I would port my flash apps to WP quickly... but to start to learn a native environment without knowing how many users are out there is not going to hapened