There are websites that provide free, temporary email addresses. This could prove useful when completing a registration that requires an email address. Many times submitting an email address results in more spam for your inbox. Jetable is one such anti-spam solution. As soon as it is created, all the emails sent to this antispam address are forwarded to your actual email address. Your antispam address will be deactivated after the lifespan you selected comes to its end, 1 hour, 1 day, 1 week, or 1 month. This enables you to verify or activate those registrations that require you to click a link in a message you receive. I have used this to set up accounts for teachers registered for a workshop for an on-line tool that requires an account. I can complete the registration process for them prior to the workshop.