Congrats on an excellent plugin. Already putting it to use across multiple sites and very happy. I've been all around the web trying to figure out how to augment your offering with AJAX form submit for the iContact form. I've tried $.ajax and $.post and keep running into issues. For example I get a bunch of Access-Control-Origin issues except for when I make the datatype JSONP but then the response comes back as HTML and not JSON.
Any advice would be really helpful here. I'm sure many others have run into this as well.