I just received this email and found it to be the picture of irony. To get you up to speed (I'd never heard of it either), "Crackulous" is an iPhone app that allows people to crack other apps for use on jailbroken iPhones. In short, it's an app for pirating iPhone apps.
The copyrighted iPhone application Crackulous is hosted on the Localhostr servers at the URL mentioned below. In this instance, said materials are works of the mind and are thus copyrighted as per the Copyright Berne Convention of 1988. Additionally, a copyright notice is displayed to the user both upon obtaining said file, when they start the application for the first time, and in the about screen.
My name is Elad Shahar, and I am the lead coder and technical director for the project known as "Crackulous," and henceforth ask - as per the Digital Millennium Copyright Act Title II: Online Copyright Infringement Liability Limitation Act of 1999 signed into law by President Clinton on October 28th of 1998 - that you please take steps to expeditiously remove or disable access to mentioned materials.
I, Elad Shahar have a good faith belief that use of the copyrighted materials described above on the infringing web pages is not authorized by my registered copyright and by the law. I swear, under penalty of perjury, that the information in the notification is accurate and that I am the copyright owner of an exclusive right that is infringed.
Elad Shahar [Contact details redacted]
The file named above contains the source code for "Crackulous". It seems Mr. Shahar AKA SaladFork is ok with his app being used to breach the copyrights of others. The source code is available all over file hosting sites and he's probably now sending out DMCAs en masse because a public beta of the app has just been released.