The thing I don't like about using a list on the web or any site, I do not have the information I placed in it.
The site ceases to exist, you have lost all your info.
I did not look, maybe you can export the list you make here?
You can argue anything you make on your personal computer can be lost as well. This is true. I have the one I made saved in my Documents folder and this folder is backup up elsewhere. So losing info from my own computer is unlikely.
I like playing around with a layout / format that suits my likes and needs. I guess I just like doing more work then necessary...
