In addition to putting the "Your karma check for today: ..." string in memory,

I think it contains the code that decrypts certain other encrypted kexts and the Finder (which is partially encrypted, too).

Some of the hacks to make OS X run on non-Apple hardware distribute the encrypted kexts and the Finder in an unencrypted format, which makes it easy to go after them for DMCA violation (circumventing encryption for the purposes of infringing copyright). Distributing an unencrypted kext, which is copyrighted by Apple is distributing copyrighted works without a license.