O nline Reput at ion Syst ems Roger D ingledine T he Free Haven Project 1
B ased on linkability • Reput at ion can help solve market for lemons Useful even in pseudonymous/ dynamic environment s • B ut somet imes dangerous if people can make many separat e ident it ies •
W hen should you use it ? • W hat ’s at st ake? • D oes a rep in one cont ext work for a new cont ext ? • Can we t ie people t o t heir online ident it ies? D o we need t o? • Can we verify behavior and measure reput at ion? • Can we predict behavior based on reput at ion? 4
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