By the definition, we can start 'Scammer: Theymos'.
Plus parents everywhere.
For the record, the classical definition of civil responsibility includes promise to perform and detrimental reliance. Both, not just one. I notice the forum does tend to favor a "one's enough" outlook, but the reasons things worked out that way in the real world are solid and haven't changed just because Bitcoin, just because internet forum or just because self entitled posters.