Dropbox, to me, is a shining example of a startup which invented a whole new field, one that I can't live without. Much like Facebook invented a whole new meth

Dropbox, to me, is a shining example of a startup which invented a whole new field, one that I can't live without. Much like Facebook invented a whole new method of social interaction, Had you asked me 3 years ago whether I'd need Dropbox, and described it as "file sharing easily", I'd have said "meh". But Dropbox is more than that. It's a backup solution + file sharing among devices, rolled into one, and executed to perfection. It literally changed my computing life. Dropbox is one service I simply could not live without anymore. So in terms of actual value to me, personally, I'd easily rank Dropbox in the top 5 (along with Facebook). * Note: I agree with joshu here, Dropbox is really not a "startup" per Steve Blank's definition. Also, since when is Wikipedia a startup?