Use Several E-Mail Addresses
Yahoo and other companies offer free and anonymous email addresses. These addresses are good for registering for web forums and other online services.
For privacy, it is best not to use the same email for unrelated purposes. If you use email@example.com as your work email, don’t also use it for personal emails. Register one email address for each of your jobs and hobbies to keep them from being cross-referenced.
If you are a memeber of a web forum and the member database is breached by hackers, the last thing you want is for the hackers to be able to use your email address to identify you.