NastyDollars sister site - Muffia?

[InfoGuy]

Has anyone heard anything about Muffia?

I received an email today that claimed to be from NastyDollars, but it's from "NastyDollars" [announcements |at|worldmediaemail (dot) com]. It says:

For your convenience we have created a Muffia account with the same information you use for Nasty Dollars. To check out your new account and get link codes for all Muffia sites visit http://partners.muffia.com and login with your existing nastydollars username and password.

All prior email to me from NastyDollars came from a NastyDollars email address. Is this legit or a phishing attempt?