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I use MaxMind to get back a risk score and use that to determine the possibility of fraud. It's been extremely effective, very cheap, and completely transparent to users (unless they trigger a high risk score). How does this service compete with that?

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I don't believe we necessarily complete with MaxMind. MaxMind helps determine transactions that may be fraudulent. I've used the product in the past and found it helpful. Sift is another good option.

UpUp provides you with method to provide your customers that lets them prove they are not fraudulent. In turns, this lets you feel correct about denying a transaction or sleep better at night when you have approved a transaction that is questionable.

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