Hey OP, sorry a few questions;
Would it be possible to provide a test?
Does this traffic have any negative effect? E.G. I know Google does not like adfly.
Do you have any country specific data you can provide? Where the majority of users are from etc?
Thanks,
A good way to test would be to try only 1000 visitors for 1 mBTC and see if the visitors convert to your satisfaction. If you want the visitors at a faster rate you can increase your bid. This traffic does not have any negative affect that we are aware of. The top countries are US, China, Spain and Germany in that order. Thanks for your interest!