[Snowtractor]

... I cinna edjumacate yu much, but I do know this. Unscrupulous fellas can set up their computers to troll websites and search for email addresses. Then they can spam you relentlessly or sell your address to spammers who will spam you relentlessly. The PM stuff is password protected and therefore offers greater security from random trolling.
Correct me if I am wrong gents.
Sean