The article we all wanted to write, but it isn't science and we feel guilty wasting the audience's time complaining about people they never run across but we see day ... after day ... after day ... 

They subscribe to our Twitterfeed, they want to write to us on Facebook, they can show us how to make money if we just bookmark them.

No one knows what they actually do is just 1 of the 5 signs.  You have to read for the rest ...

H/T Jennifer Ouellette at Cocktail Party Physics.