Internet traffic flows (in a broad sense, involving all types of information exchanged through the internet) can provide a source of data on socio-economic phenomena complementary to the data usually collected by interviewing internet user. The traffic generated by the different activities over the internet can be analysed and processed to obtain statistics on the use of internet. The general objective of this study is the proposal of a methodological framework for new indicators and of a roadmap for implementing at a large scale the promising applications of the concept of internet as a data source in the domain of monitoring information society developments.