May we have a "try it out without first signing up" space where one can create and play with a list that only lasts for the session or something?
Here's a good place: http://mail.google.com/mail/help/tasks/
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What!? =)
The bit that struck me is in the third paragraph:
So it seemed foolhardy to think that I might build a new destination site. Instead, my cofounders and I decided to build something that could be accessed from the places where people already spend their time online.