[BryanA]

I don't use a catch-all domain, but do use custom tagging. I started-out tagging email with the '+' character, but a lot of places just reject that character; so I started using '0' instead. If you're running your own domain and use postfix, it's not difficult to setup a user-regex which will reject any email without a valid user prefix e.g. [e-mail] works, but [e-mail] is rejected. I've been using this for about ten years now and have had to blacklist about 50 email addresses. I agree it's awkward when you're telling a store clerk or phone support person your email address, but I've found that they either think it's funny or just don't care enough to even comment.