Hi guys, I saw this linked somewhere else and it is so helpful I had to share it!
It is a graphing tool to put in your weights and it helps you to see the overall trend. One extra feature for women is it allows you to track against your cycles too. It helps to absorb all the fluctuations and give you a real sense of your progress.
Great for data visualization junkies like me
http://www.weightgrapher.com/