Ok, this may be completely off the wall but I am curious of others input. Let's say you have a simple memory card which is empty of any data....not a byte to be found on it. Let's say it weighs in at about one ounce for sake of conversation. This card has a capacity of 16 gigs...again for conversation sake... If you were to take this empty card at one ounce and fill it to capacity, 16 gigs, does the card now weigh, even minutely more than an ounce as it's maxed out........ Or is it all just data and this question is ridiculous....?