This is an old question, even older than we may have thought, and is back in vogue again after the press got a look at Jack Lew's signature. Jack Lew is Obama's choice for Secretary of the Treasury and as such will have his signature on dollar bills. It looks like this:
Now this is ridiculous for a grown man. This is not even a signature, or words. It's a doodle at best. There's bad handwriting and then there's doodling and this is doodling. If I were to analyze Jack Lew from this exhibit, I'd describe him as lazy.
But even more strange is the article attached to the original question about what handwriting says about a person. It could be that our culture and civilization is not what it once was and we have dumbed ourselves down, but the article becomes almost incomprehensible after the first paragraph.