I saw that feature when registering, and I didn't turn it off; I figured that my e-mail account can take it if I clear it regularly, and it's surely a nice reminder of what threads I've posted to in the last couple days.
Come to think of it, I should check my mail; I'm sure at least one thread I've posted to has gotten a few replies...
Also, I think I'll go and turn it off now - this is one e-mail per reply, right?
I figured that I wouldn't be getting that many private messages, so I left the e-mail notification on. Of course, some other beautiful little woman might want to avoid having people contact her and would probably turn off all private messages, e-mail contacts and everything else that might let a boardmember get a hold of her.