You know, Texacon, sir, it's just really stupid.
One can understand--franksolich most of all--the need for protecting oneself on the internet by distorting or covering up the truth, although my own technique is simply to not say anything at all; to omit something, rather than lying about it.
But the primitives lie about the stupidest little trivial things.
If the unappellated eohippus has ever commented she wears size 13 shoes, she's probably lied; she perhaps wears size 16 shoes.
If the burdened primitive has ever commented about going to the grocery store, he's probably lied; he perhaps went to the hardware store instead.
Just really stupid little things not worth lying about.
But lying seems so much a part of the primitive nature, they can't help themselves.
The deal with liars, though, is that they're inevitably their biggest victim.