Jilly, I also love binders for organizing anything that I need to look at on a semi-regular basis. I used to file everything in traditional files. Then a friend of mine (who is highly organized) mentioned binders. I started using them at work and it made life so much easier.
For things that I need to look at once a year or less, I prefer traditional files (or the recycle bin). But for anything I look at often, I love binders.