On a serious note,Google should screen Android market more rigidly before creating hype on jellybean or whatever..it has become a junk yard.
One day it will be quantity Vs quality (Android Vs iOs).
thats not true always.
what if i block app by firewall .
what if the device has host file changed to localhost .
Nope, the inbuilt ads will still try to access and consume the resources.