As I've read this post of the A-Ads admin:
https://bitcointalksearch.org/topic/m.3344054
It seems that he never mind the traffic coming from bots or traffic exchanges because they are able to separate the different sources of traffic, IMHO.
EDIT: On the other hand, we can't use the OP's method to a free hosting sites because of the limited assigned bandwidths on their free hosting service, most of the hosting networks that give free hosting will suspend your account if they will detect that your site is exceeding it's bandwidth limit (like hostinger),