Tweeter Dee & Tweeter Dum

I've been following the U.S. Secret Service on Twitter ever since last week when they established a new account.  It fascinates me to think about a man in a trench coat and a fedora, blending in on a park bench with his concealed piece while tweeting away on his Blackberry.  Normally their tweets are really dull.  Nothing top secret, understand:   nothing about grassy knolls or underworld spies like you might think.  Most of their tweets have been about recruitment fairs mixed with modestly-phrased bragging about 50K runs.  And they refuse to follow anyone else on Twitter, which I don't think is playing well with others.  When I last checked Twitter at 9:45 p.m., they were being followed by 19,773 people but not one of us made the cut as a followee.