Suzanne was referring to posting email addresses within the message board itself. You don't want to say "Hi my name is so and so, my phone number is this and my email address is this". Any information you used to register is kept confidential unless it is in your public profile. If you want to change any of your information you can look under "User CP" menu item and check items within there which you want to change.
You can't out-exercise poor eating habits.