[Geee]

As the service is connected to your email and your Google+ accounts, it's possible that Google can determine actual frauds with much more accurately than, for example, Paypal. Google is a data company after all, and I'd be surprised if they don't employ big data techniques to build trust networks and pinpoint frauds.

[mcherm]

No one can determine fraud with absolutely no false positives. If there is no way to "appeal", then those false positives (no matter how few) will be thoroughly screwed.