[phr]

You're driving away new submissions by asking for a login or registration at that stage. At this point you can't afford any barriers between the submitter and getting their item up on the list.

I suppose you could include the login/registration info on the submission page, but I'd allow anonymous submission.

[arjunb]

You might also consider using Facebook Connect. Check out http://www.brightkite.com/ as one example of a pretty nice login flow, there are more on our wiki @ http://tinyurl.com/6ybl44.

[tower10]

Thanks for the feedback. I will have a careful think about anonymous submissions (obviously spam is a big issue). Anonymous voting is definitely on the cards.