neckbeards

OK I'm just wondering because I'm kinda new here, but what is a neckbeard? Is it literally someone who has beards on their necks, or is it some kind of derogatory term against programmers?

Thanks,

- John

I don't know what that means >>4 google came up with nothing, care to enlighten me?

Also I'm going to bed now, exams tomorrow, not that any of you care.

Thanks,

- John