So there's basically three types of websites. No, four.
Firstly - ones you can't sign up to. Google, Wikipedia, Translators, Limewire, Youtube. Actually you probably can sign up for all of those, but why would you? They're totally informative and helpful and also library book rentals, how-to manual sales and CD sales are p-l-u-mmmmmetting. It's changing!
Secondly - ones you (I mean me, or I) sign up to for one reason (To buy something online, to download an image, to comment on something) and then I forget the website name, my username and my password. It's like a one-off encounter with a stranger, that looks meaningful at first, only then