Is there anything stopping someone from abusing paid ad services for any of these platforms themselves to the same effect? This is assuming that they allow you to finely target the ads which I believe they do.
Not really. There was a story about someone pranking their roommate with targeted Facebook ads but FB then raised the minimum amount of people targeted. However as far as I know nothing prevents you from specifying a majority of fake emails/phone numbers in addition to your target’s phone number as long as you’re happy to pay for the extra wasted fake targets.
No. I think they are doing exactly that: They pay ad services like Outbrain pennies to run retargeting ads. The Spinner has no own platform, they just bid on the market (and can really lowball the bid, until some will go through). Real costs are about 0.50$ - 5$ so the markup is huge.
