Examples of modal dialogs for comment forms?

I'm looking for examples of actual websites (not articles/demos开发者_运维百科) that use a modal dialog (like a jQuery dialog) to display comment or contact forms, in order to get some ideas of how I might want to implement similar functionality.

I'm having some difficulty finding such sites via search, though.

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Well, I could definitely point you to an example of a mooTools moodal box. http://www.e-magine.ro/playground/moodalbox/

Is your question more of how the form layout should flow within a modal box? I would keep it short and sweet and try to avoid ridiculously long scrolls.

You may want to consider using a library such as moo for it's transition effects as they are much smoother then jQuery.