To help Windows XP cope, advanced format drives will be able to pretend they still use sectors 512 bytes in size.

BBC: Hard drive evolution could hit Microsoft XP users

In the last two months of 2007 the number of items stored at Amazon Web Services grew 40%, to 14 billion units. (Units vary in size from a couple of bytes to 5 gigabytes, and Amazon keeps the totals secret.) That's a faster growth rate than in the April-October period.

FORBES: The Death of Hardware

This was because Slammer contained a simple, fast scanner to find vulnerable machines in a small worm with a total size of only 376 bytes.

BBC: Aggressive net bug makes history

One of the only other ways to spot the virus is in the size of the attachment which is always 50, 688 bytes.

BBC: Bugbear virus threat increases