In d4me we analyze the third party network callings.
1) If we found any third party networks then we match their pattern from easy.list which is maintained by addblock to identify trackers. Then we show them to user as tracker.
2) We don't block any network calling from any site but notify the user about tracker.But for blocking we are working on it so that we able to include it on future version.
3) We also identify third party cookies who are permitted for creating cookies by visiting any site.
4) We have showing the tracker back log as piggyback feature so that we can inform the user which tracker is called from which trackers.
5) For now we are storing trackers information but future we are changing our architecture as local data storage.