DaveBerard, your claim that, " The List ID number is only useful for developers who are using our API..." is not really accurate. I'm a developer and need to remove contacts from a list through the API, but I need to be specific about which list they are removed from based on activity they've performed on my website. The only way I would have of identifying a contact's "correct" list is if the ConstantContact account owner feeds the list ID it into my system to begin with. I've performed this exact same style of integration with MailChimp and Real Magnet, both of whom permit a list to be accurately identified. I wish Constant Contact did also. Until then, it appears I'll not be able to integrate my system with Constant Contact.
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