Hi,
you do have the option of NOT having your email address listed on the site ie it's viewable by the administrater , but not by the forum members.

I've had to do this because our main email address is used for hubby's business purposes and I can't afford for it to get flooded with junk.

I opened up a hotmail account( free), and I do end up getting some junk mail, but it normally gets sent straight to a junk folder which takes a couple of seconds to delete.
If I ever ended up being badly spammed, I'd just close it and open a new one.

I only give close friends or someoneone needing to send a large attachment our main email address, as it would be such a hassle to have to notify business associates of email address changes.

best wishes
Rikki