Newfags with 4chan references in their signatures.
To remind people not to talk about it... such as you.
By saying that, you got jonesm4 to ask what is 4chan? So now,
he might google it, and spam it up (Although it's not as if it's already spammed up)
but you just attracted another newfag.
It's there to remind people NOT to spout off memes or tell people about it.
I don't think it's "Cool" to be on it. The only people who know about my /b/tardness is you, and any one else who already goes on it.