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Brian Caulfield
461 followers -
Forbes tech writer.
Forbes tech writer.

461 followers
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The worst news you'll read today.

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There is nothing for me here, is there? Anybody out there? Anybody home? 

When you're my age, many things baffle you. Door handles, for example. The latest mystery for this old timer: Tumblr. Who uses it? How does it differ from Facebook? From Twitter? Why is a survivor of the micro-blogging mini-boom of 2011 so hot? What do you get out of it?
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