There is an interesting thread on the GTA Aquaria forum right. It seems as though someone acquired a list of email addresses and spammed many of their members. Then one of the recipients decided to do the same to promote his business.
As a precaution, I have set all the emails to be hidden for our forum. You will no longer see email addresses when you view another members profile and when you access the members list. You will still be able to see your email address of course. Some of you had already set it to hidden so no changes for you.
Private Messages are not affected.