daleshrimpton wrote:This possibly depends on who it is that is named and shamed.
Absolutely. It also depends on how the culprit reacts to the situation, too. The mechanism is a well-understood one. It's called the "Streisand Effect". The more the culprit struggles, the more attention is drawn to the information and the worse he looks. That never goes away. There is, however, the problem of newbies not being aware of what's gone on.
However, because the information is out there in public, newbies - who seem to develop astonishing Google powers overnight when the enthusiasm for magic first rises - come across it. Supported by clear, unequivocal evidence in the culprit's own words, any attempt to deny it or poison the well shows immediately that the culprit is a person of questionable character.
It's also a HUGE mistake to think that magic isn't a huge mass of interconnected people who use information like currency, and who spend it freely. The effect on the wrongdoer is automatic and progressive marginalisation as word spreads.
Deliberately drawing attention to having done wrong, literally wearing it like a badge of wounded pride, amplifies the effect further. One has to wonder about the character of someone who deliberately does that. With every protestation, the binds tighten, more people who didn't know become aware, and the damage deepens.
Honesty is always the best policy. Without proof, we are nothing.