Every advertising network and every site has some percentage of fake traffic. Probably every website on the internet is scanned by bots and hackers.
What makes AnonymousAds different is that you don't have to pay for fake traffic. There is no pay per click or pay per impression option. You are paying for the chance of your ad being shown on particular ad unit (or set of ad units), i. e. for share of impressions, not for absolute numbers.
You can use the goal tracking option of the campaign and receive id of the traffic source in GET parameter, and then to reward efficient ad units via
Goal tracking API and get more traffic from them.
This is not trivial technically as it requires some coding on your side, but it is not complicated either, and it enables the following use case: you spend some %% of your money to test ad units and then you spend the remaining on ad units that actually generate sales for you (no matter how they do it and how much traffic they generate).
