I HATE the ps2 memory cards. I have three of them, and I can never remember what data is on what card. I have 50 games, so it gets hard to remember. The worst is when you pop in a game and it autocreates new data on the wrong card. Then you have 2 or maybe even 3 memory cards with the save data on them and no foolproof way to discover which memory card has the data with the 50 hours of work put into it and which has 5 mintues of gametime on it. That is unless you want to go boot up the game and check, but who has time to boot up all those games and restart them all just to check memory card data. It really is a shitty situation. Especially with some games taking up so much space.
