In online interactions in general, but especially in interactions between buyers and sellers on internet-auction platforms, the interacting parties must deal with trust and cooperation problems. Whether a rating system is able to foster trust and cooperation through reputation and without an...

Digits in statistical data produced by natural or social processes are often distributed in a manner described by “Benford’s law”. Recently, a test against this distribution was used to identify fraudulent accounting data. This test is based on the supposition that real data follow the...