#4 – TwitterPeek
With the incredible success of Twitter, it’s hard to believe that the company has had any failures. But, they had such a failure with the 2009 release of the TwitterPeek. This device was intended to tweet…and that is all. It’s only capability was tweeting, and with the advent of smartphones that could accomplish the same feat quite easily, the TwitterPeek quickly went to the failed gadget graveyard.