If you're worried about privacy then, yes - emails through the board's email system are logged but they aren't looked at unless there is a complaint and the logs are regularly deleted. If necessary just ask people to send a simple message through the board's email system with their contact details and take things from there.
Putting your email address in a post in a forum like this one is like asking for spam!
I won't say anything more about that, it's up to you, but feel free to use this BBCode:
[emailme]put your member number[/emailme]
e.g. for me it would be:
[emailme]1[/emailme]
which will appear like:
You can find your member number in your post profile.















