I received the above e-mail dated November 14. It says my domain name "will expire soon!". Notice that it doesn't say when it will expire. That is because they don't really care.
So I logged in to the domain name registration site. It said that my registration was expiring on April 12. This is not soon. This is in 5 months.
What I've figured out is that these companies just spam out a "renewal notice" email to me every 2 months, since it's easier than actually bothering to check when my domain really expires. Of course, they want me to keep renewing when I get the notice, pushing out my extension further and further. I used to get the same thing when I had magazine subscriptions.
Hey Register.com - can you just send me a warning about 30 days before my domain will expire?