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mtrichardson: This is pretty neat.The UI is pretty, but somewhat distracting.  Not enough contrast, I think, and it could be more minimal.Freeze wasn't super intuitive.Having a history of what you've posted with thumbnails of previous things might be neat, but might just end up being distracting.The iframe thing, I go both sides on.  I feel like sometimes I just want to show a picture of it (luckily with Skitch this is a fairly trivial process).It's really neat though, I'm enjoying it.(oh, and, as soon as you can, I would recommend not using the twitter password anti pattern and implement oauth there)