I must be a ‘lametard’

What is a  ‘lametard’? Not sure, but I must be one. I was reading a  posting about MySpace just now and the blogger’s thesis was that if you don’t "get" MySpace, then you are missing something big.  Something bigger than the blogosphere, even.  ‘Course I’ve heard of MySpace, but right now I’m in the head scratching phase of, well, of what use is it for libraries in general, or for me, in particular?