Do you still own a Dreamcast?
If the answer is yes (which it should be), navigate on over to www.Dreamcast.com and be rewarded for your loyalty to the greatest console of all time. Sega is offering up free e-mail accounts (blahblah@user.dreamcast.com) to anyone who can register their Dreamcast's serial number on the website. It appears to be down from high traffic right now, but keep on refreshing the page, because this is just too odd to pass up!