Spybot - Search & Destroy found several tracking cookies in my Firefox profile, in spite of the Tracking Filter. I added the following lines in my personal list :
Hope that it will work (note : not sure they are all trackers and not counters (statcounter.com), but some are definitely (commission-junction.com, doubleclick.net|com, ...)).
That's strange, because Spybot keeps finding them...
In fact, it looks like it doesn't remove the cookies (I re-analyzed just after removing them, and it still find them...). So probably they were here before I installed the list
I suspect the theme of Calimo's initial observation is correct.
Of the 9 filters that Ares provides--
"advertising.com -> Already in EasyList (".adverti") . . ."
Each requires usage of either an additional lower-level domain name, a higher-level domain name, a path or some combination thereof; otherwise such filters would be bypassed.
The use of certain specific second-level domains for third-party tracking service purposes as well as the tendency of certain specific second-level domain names to be included in paths used for first-party tracking purposes deserves additional scrutiny probably; while keeping the potential of adding false positives in mind of course.
Thanks to Calimo and Ares for calling more attention to this matter.
You may pick up a cookie from some of those if you visit a whitelisted site. If you do pick up a cookie, the chances are that they are hardy ever accessed because the domain is ALMOST always blocked.
Don't forget that anytime that you disable ABP for any reason you will receive any cookies that are available where you are too. It only takes 1 visit somewhere to create a cookie. I wouldn't worry about it too much because they wouldn't normally be accessed anyway.
You can also add those domains to be 'blocked' in Firefox's cookie controls if they bother you.
"Experience is something you don't get until just after you need it"