Two of my friends have fallen for this scam already - it's the MySpace "Stalker Tracker". This is a TRICK to gain access to your MySpace account. Read more here:
http://gul.li/2007/01/27/phishing-20...-myspace-scam/
Whatever you do, no matter how appealing the service is, DO NOT ENTER IN YOUR MYSPACE E-MAIL AND PASSWORD ON ANY SERVICE FOR ANY REASON. Not for a Macy's card, not for a "Who's viewing your profile", not for a design code, not for ANYTHING.
Again, I have already had two friends fall victim to this, and they are unknowingly spamming all of their friends. Please don't allow yourself to fall victim to this, too!