OT: Signed in person valuable cards decrease or increase value?

[egri]

My signature pretty much gives away my position in this debate, but I think part of the answer is how the signature looks. If it's well done in fountain pen or sharpie great, OTOH I have been able to grab some of the more difficult cards for my set cheap because the signatures looked like crap. On a more personal level, I've always liked knowing that the player depicted actually held the card I have, especially if it's someone who passed long before my time that I would've liked to meet.