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An attendee tries Google Glass during the Google I/O developer conference on May 17, 2013 in San Francisco, California.  - 

It's quiz time on Marketplace Tech. $0, $9 billion, over 376,000 versus 613,000 followers, 6 years in prison: Can you guess what these numbers mean?

We put Cyrus Farivar, senior business editor at Ars Technica (read his latest on Google Glass here), to the test for our latest edition of Silicon Tally. Click on the audio player above to play along.

Follow Ben Johnson at @@TheBrockJohnson