Note: I couldn't reply to a thread by that name. So, I'm starting this one. Basically, this is still about something that happens, most likely, with a few TPLs. Some of them are whitelisting third-party communications, without any need. With this, I mean that, if there's no entry blocking communication, then this communication is allowed, therefore no need to an explicit allow entry. You can read it here, for instance: -http://msdn.microsoft.com/en-us/library/hh273399(v=VS.85).aspx This means that, as I mentioned above, if there's an allow rule, it will be allowed; if there's a block rule, it won't be allowed. (Third-party comms won't be allowed.) This also means that, if you don't want to block, you simply don't put an entry in the TPL. Let's take as an example, the example I mentioned that thread sometime ago ( May 25th, 2011). There's an entry (among others) in this list -https://secure.fanboy.co.nz/adblock/ie/fanboy-tracking.tpl +d track.dhl.co.uk The +d means that communication will be allowed to that tracking service/domain. Now, why does that happen? There is no block entry in that list, therefore no need for an allow entry either. Communication is never blocked, if there's no entry blocking. There is no need of whatsoever to explicit allow rules. There was some controversy about Truste TPL because of this same situation - too many allow rules, without needing them. You can read that in here -https://www.eff.org/deeplinks/2011/03/tracking-protection-lists ; maybe in other places as well. Truste now only has a few allowing rules. Most of them actually block comms. This is the link: -https://easy-tracking-protection.truste.com/easy.tpl What this achieves is that, if you are blocking third-party cookies, for instance, then they will be allowed, because there's this entry allowing communication in the TPL. There are a few more examples in that same list, as you can see from the screenshots. So, I'd be careful about the TPLs that one's using. Sometimes, one may think one has privacy, while it's actually being compromised in some situations. A few lists that I've checked, and that actually are about BLOCKING comms are: -https://www.abine.com/tpl/abineielist.txt -https://www.abine.com/tpl/abinekidsteens.txt (I'd use the two of them in conjunction.) -http://www.privacychoice.org/trackerblock/all_companies_tpl -https://ie.microsoft.com/testdrive/browser/p3p/google.txt I suppose you could manually edit the other lists, because the files are downloaded to C:\Users\username\AppData\Local\Microsoft\Internet Explorer\Tracking Protection. But, I'm not sure if it will work afterwards, or if there's some sort of checking. You'd also have to keep an eye when they are updated. I don't know about you, but considering there's no reason for explicit allow rules in the TPLs, one has to wonder why they are there in the first place. I'd stay away from any of the lists that are allowing comms, because even if you are blocking third-party cookies, then they will be allowed.