in general, the general guideline for inclusion in any general dictionary is that the word must be in general use; that is, in common use in the public press and ordinary speech in both informal and reserved styles (such as those used in business) as distinguised from specialized lexicons such as those used in law, medicine, computer science, etc.

I don't think warez qualifies, as it is still pretty much limited to use by software pirates and understood by hackers.

let's take an informal poll regarding warez:
[ ] I have used the word
[ ] I've encountered the word and know what it means
[ ] I never heard of it before this thread