If you really found the identity of Satoshi, wouldn't it make far more sense to contact him privately and blackmail him? He's got, what, one and a half million bitcoins?
Perhaps out of some twisted sense of honor the individual in question feels that blackmailing such a mysterious and (among hackers) revered figure would be unseemly. Although if this account is true it seems like he might be blackmailing him anyway.
When you are dealing with someone who potentially has access to hundreds of millions of dollars. Blackmailing then in public might be a way of protecting yourself from having an "accident".
There are ways to anonymously contact someone. Buy a prepaid cell phone. Hire a lawyer under an assumed name. Send a letter, but put a fake return address.
