Below are links to external sources of information (free of charge), mostly in local languages.
Advertising market development
TNS Gallup (advertising in Finland)
IAB Finland (organisation supporting and promoting the growth of the Finnish digital and interactive marketing industry)
IAB Europe (organisation supporting and promoting the growth of the European digital and interactive marketing industry)
Circulations and online visitors
The Finnish Audit Bureau of Circulations (Circulations in Finland)
The Finnish Newspapers Association (i.e. newspaper circulations in Finland)
The Finnish Periodical Publishers Association (i.e. magazine circulations, magazine advertising and readership in Finland)
TNS Metrix (Online visitors in Finland)
HOI (Circulation in the Netherlands)
TV viewers and radio listeners
Finnpanel (Radio listeners and TV & Web TV viewers in Finland)