I have just received my last issue of Maximum PC. There was one gem in this issue. They speculated on size of future HD's.
Terabyte - 1000 gigabytes, or about 200,000 5MB MP3 files.
Petabyte - 1000 terabytes, or 200,000,000 MP3s (take that RIAA).
Exabyte - 100,000 terabytes. Thats 2 billion MP3s.
Zettabyte - Still with us? A zettabyte is 1000 exabytes, or 200 trillion MP3s.
Yottabyte - 1000 zettabytes, or 200 quadrillion MP3s.
Hellabyte - One kajillion yottabytes. OK, they just made that one up.