Just joined the forums. I collect serial numbered baseball cards (I don't have a list yet as I have thousands and am just getting them sorted by year/brand,etc). I buy bulk lots as it is the easiest way to build the massive collection I have. I do buy singles as well for harder to find cards and low numbered cards. I have almost 100 1/1's. I hope to build my collection even larger here by taking all the #'d cards off everyone's desk, box, ground, shelf, etc. I have over 500 gu/auto's (baseball, football, basketball, and hockey) that I will be looking to trade/sell soon. I am trying to find a good place where I can put together a "checklist" or something with all of the cards I have. I don't really like Beckett's collection system so if anyone has a good method besides the old fashion excel spreadsheet method, I am all ears (well eyes).