1. Do you have premium paid accounts? If yes, then you need to address credit card fraud with standard AVS checks and other risk scores for the card and user information.

2. How tolerant are your users to ID checks? If they are highly tolerant and you are willing to incur the costs then using identity validation services can help, but understand the stronger services will cost more and will incur more abandonment by prospective users.

3. How do you solve the problem of users creating multiple accounts? ID checks will reduce some of this problem for the casual abusers, but will usually not stop fraud rings. Device fingerprinting, and more specifically device reputation, can play a significant role in dramatically reducing this problem.

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