Bit, byte, mole?

Fascinating story from Discover Magazine

As of 2007, humans had the capacity to store 295 exabytes. An exabyte is 1018 bytes. If you think of the gigabytes (a billion bytes) in which your hard drive space might be measured, an exabyte is a billion of those gigabytes. Another size comparison: Astronomers, by necessity, are designing new information processing techniques to help them grapple with the coming age of “petascale” astronomy, because they’re starting to get more information than they can handle. “Exa” is the prefix after “peta”; it’s a thousand times more.

How long until people speak of “moles” of memory? Avogadrobytes?