Technical Report: Facebook Tracking Through Social Plug-ins

"Facebook Tracking Through Social Plug-ins - Technical report prepared at the request of the Belgian Privacy Commission" (pdf). This is Annex 1 of the report already mentioned hereThe technical report presented provides a technical description of Facebook tracking through social plug-ins such as the "Like Button". The report was written by KU Leuven and iMinds researchers Güneş Acar (COSIC), Brendan Van Alsenoy (ICRI/CIR), Frank Piessens (DistriNet), Claudia Diaz (COSIC), Bart Preneel (COSIC) at the request of the Belgian Privacy Commission.
For an overview of the results look also here.
Update: Facebook' view.