Blockchain advertising networks would be a great way to decentralize the web and give more power to publishers. Google is awesome, but it's also awesomely in control of the web. Facebook is likely to launch a competitor to Adsense, but that wouldn't really solve the core issue.
How to combat fraud with a blockchain ad network?
Click fraud is a huge problem for advertising. Google Adsense has a lot of very smart people working on combatting this. One way to avoid this is to simply not do CPC, cost per click, and only work with CPS and CPL models, where publishers are paid for actual sales or signups.
Adahoy
http://adahoy.io/ Trustless marketing platform powered by smart contracts
