I agree. Many 'prophets' and speculators have come and gone. IMO, the problem though with this guy is that he's not just speculating, but would like nothing more than to control the timing and while he may not achieve the 'biblical' armageddon, I don't think it will keep him from trying. From what I've read, if he is successful he believes it will force the return of the Hidden Imam, an event that Ahmadinejad has decided should happen now.
Noting that this is now in 'chat', does anyone suspect that media coverage of the subject will increase come Monday?