Although forums and sites having discussion panels are useful but they have one drawback i.e. if you publish or give away your email address; you will become a victim of spammers who flank on your email address and your inbox is filled with junk emails. Although you can get rid of these by using Junk filters that most of the emails providers provide inbuilt. However, still you cannot say that you are 100% safe.

However there is a way to get your email masked and this solution is provided by tinymail.me.