Since I posted this I should probably respond. I use excel sheets, and have a folder full of links to useful websites that I should really organize. Seriously it has stuff from all the way back when I used to rp Sailor Neptune.

I am a bit crazy and use excel to create color coded CR charts with everyone my characters have ever talked to. I've got three, one for each character. It includes links to all of their conversations and a color coding of what the character felt during/after the conversation. So bascially lots of red means 'I hate you so much' and lots of blue means 'you are so awesome never leave me.'

I would take a screencap of the crazy but it's on the computer that is broken right now. I should really move it to google docs.

Edit: Things I forgot
Kaiba has posts for both information about KaibaLand and his in-city deck"

I also add everything I post in to my memories so I have a list to refer to later.