Using Chrome I'm rejecting a bunch of ad-specific cookies (by domain) and white-listing some domains to accept all cookies. I've added amazon.com and amazon.co.uk to the whitelist (including all third-party cookies) but I'm constantly being prompted to re-authenticate (i.e. I can start a message to a seller, and when hitting send get kicked out and lose the message because I have to re-authenticate).
I can't figure out what domains Amazon's authentication is coming in on to whitelist.
