Using safecoins for an ad service would be excellent. And click fraud can be prevented a lot since all users on the SAFE network have a unique user ID. Moderation of ads will still be very burdensome however. Maybe an unmoderated ad service would be possible unless it would deteriorate into a total mess of illegal stuff and such, ha ha.
I’m tempted to develop such ad service for the SAFE network. And the business model would be to only have a small fee, such as 1% of the revenue.
And the ads can have vote up and down buttons. That could possibly function as a user-moderation of the ads.