I'm generally against malicious or vandalistic cracking
because it just gives geeks a bad name; and because I fear it
will eventually somehow get used against free software.
One exception I'm willing to make is cracking as a kind of
principled civil disobedience. The Federation on Random Action
has made a call for Electronic Civil Disobedience around May
Day. Not only do they have a communique (hmm, I haven't
decided yet, but I think I'm tired of the pseudo-revolutionary
lingo; manifestos, communiques, revolutionary blocs, oh my!),
but they are distributing cracking tools. I'm a lot more
comfortable doing CD in real life, since that typically
doesn't mean federal charges, and my guess is that any
electronic CD is going to mean federal felonies and the FBI.
Expect arrests.