| http://www.w3.org/ns/prov#value | - Which one is the most likely to cause losses to your sales: the occasional paranoid user who actually wants their ID to be secret (guesses are they used a throwaway ID and email address anyway, and if they are paranoid would they even buy you anything?), or the user who is not yet addicted to your platform, hasn't come by for a while and still can not login after trying 10 different combinations of us
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