So was pets.com at its time (and countless others). The time scale is different, but ... if twitter crashes and burns soon because it can't make any money, it w

So was pets.com at its time (and countless others). The time scale is different, but ... if twitter crashes and burns soon because it can't make any money, it will have left more impact on the history books, but ultimately will be remembered as "a facebook like also-ran, that only had a whats-on-your-mind line"