You really shouldn't give out your e-mail address via FR. That's practically begging for spam.
I think lormand was referring to his FRmail, but I've had my EMail address on my FR page for years and it's never been an issue other than an occasional nutball. But in the last 3 months that I've posted about Paul, the nutballs mailing me on and off FR has expanded.
Personally, I don't think an opinion from a freeper is worth much if they won't post it, profanity and threats can be worked around, and while I've never posted an EMail, there's no privacy issue there.