Some of the best companies around are still private: Evernote, SpaceX, Twitter, and, of course, Dropbox, the file-sharing service that's ostensibly surrounded by Google's (NASDAQ:GOOGL) Drive, Microsoft's (NASDAQ:MSFT) SkyDrive, and Apple's (NASDAQ:AAPL) iCloud.

More than anything else, the flexibility to handle work as well as personal files deftly has made Dropbox popular. What we didn't know is just how popular. But then Strategy Analytics released a report that found it to be the second-most-popular "locker" for digital music and movies, trailing only iCloud.

Is now the time for Dropbox to go public? Tim Beyers of Motley Fool Rule Breakers and Motley Fool Supernova answers this question and more in the following video. Please watch, and then weigh in using the comments box below.

Fool contributor Tim Beyers is a member of the Motley Fool Rule Breakers stock-picking team and the Motley Fool Supernova Odyssey I mission. He owned shares of Apple and Google at the time of publication. Check out Tim's Web home and portfolio holdings, or connect with him on Google+Tumblr, or Twitter, where he goes by @milehighfool. You can also get his insights delivered directly to your RSS reader.

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