Fig. 6From: Behind the scenes: a cross-country study into third-party website referencing and the online advertising ecosystemA directed graph that shows the top ten third-party sites in the UK, which are ordered by out-degree. The size of the domain is proportionate to the number of references made by that site (i.e., the larger the text, the more references). Additionally, the other domains that are referenced by these third-party sites are also includedBack to article page