Okay, so. I signed up for Twitter and within a day was being "followed" by an old co-worker that I don't particularly care to keep in touch with. He found me through my email address, and I see that any Yahoo contact I have (and I have a lot of them) can find me this way. Don't love that, and don't love the idea of people from my everyday life knowing my internet handle, which I have to use because I can't Twitter at TAM without using the Saganite handle. I'm not Saganite anywhere else but my skeptic boards and a few other internet boards I used to frequent but don't anymore.
How to avoid this? Do I have to cancel my account, then create a new email address and sign up for Twitter again through that?