The site is incredible. I love the design and the extraordinary simplicity in functionality.

To make a side comment, this seems like an ideal MVP. It gets all the core functionality well-implemented, with enough polish to make it captivating.

Some users mentioned that user accounts, despite the use of HTML5 to store user-specific info, is something that would still be useful. I agree, and it makes it an ideal part of your next revision.

Keep up the good work! This is definitely bookmarked.