So basically:

1. I do sign up (but the sign up process is extremely streamlined)

2. I retain some sort of anonymity (I don't give you any personally identifiable information --- unless there's some embedded in the links I store) (and presumably your web server generates logs)

3. If I forget my password I can't have it reset --- I've lost control of my bookmark collection. Can I sign up again and make a copy of it that I can control?