[quote name='bertbass' timestamp='1348524897' post='1814906']
OK, I'll be the one to ask the obvious question. What's a ghost note?
[/quote]
They're sometimes called 'dead notes' too; it's the percussive, non-pitched noise that you get when you either pluck or slap a note that isn't fully fingered (also called left hand muting). Try resting all four fingers on your fretting hand on the strings and then pluck a string, it'll give a non-pitched sound that hasn't got any sustain to it - that's a dead note.