anonymous email addresses

Setting up a pseudonymous -webmail account is "a prudent first step", according to the EFF. But it's easy to trace the IP address used to log in to that account, then see what other accounts have been accessed from the same address. Use Tor, a system that masks your IP address: go to download the browser bundle. Always use it to log in; one login with your real IP address will be permanently traceable. "Do not give your -webmail provider any information linked to your real-world identity."
When websites or persons you do not necessarily trust ask for your email address, give them one of our anonymous email addresses and hide your true email address and online identity.