Step 1: The RIAA issues a press release claiming that the “equivalent” of 421 CD burners were seized in a raid on music pirates.
Step 2: The Register follows up, noting that only 156 CD burners were seized. They contact the RIAA, who explain that some of the CD burners were quite fast, so the RIAA statisticians decided to count them as more than one burner.
Step 3: CNN blithely reports from the press release, claiming that 421 CD burners were seized. CNN is owned by AOL Time Warner, a member of the RIAA.