Our website has forums and an issue tracker. Many users do not want to reveal their email address in those contexts. For a couple of service-oriented sites I'm

Our website has forums and an issue tracker. Many users do not want to reveal their email address in those contexts. For a couple of service-oriented sites I'm working on, which won't have forums or public issue trackers, they only use email address (which is change-able). But, it's just not an option for my primary business website.