No, there is no private list, it's just the public one. You can check out the key header whitelist here: http://cheme.com/ Visit this site with "Acceptable Ads" enabled and disabled and you will see the difference. Notice the "data-adblockkey" in the source. This was publically announced in their "Acceptable Ads proposal" forum here and later added to the public list: https://adblockplus.org/forum/viewtopic.php?f=12&t=17699