blockAdz keeps 75% of your profit, do you think this is fair?
paying or not, I can assume this network is scam, avoid!
I think you're confused on what scam means
perhaps so. just because they pay low per click, doesn't mean they are scam. its just the rate they give and willing to pay for their publishers.
there are plenty of bitcoin adnetworks these days that even the common adnetworks are starting to accept bitcoin so you still have the alternative which to join.