This thesis is a volume of 134 pages and includes 5 research articles. The thesis is a contribution to the empirical literature that has developed since the early 2000s on the changes introduced by the Internet trade in cultural property. It examines in particular a set of questions on the complementarity or substitution distribution channels, physical and virtual, the effect of the "Long Tail Theory" and price dispersion on the Internet. The interest of this thesis is to provide empirical evidence to the debate, thanks to the creation of databases obtained by automated data capture observable on the Internet. Statistical and econometric results from these studies detail the specifics of best-selling books, CDs and DVDs as distribution channels (Amazon, Amazon Marketplace, physical stores) but also according to their format (paper books / ebooks). Regarding price dispersion, the results show a low variability of prices by sellers of Amazon Marketplace and low impact of traditional measures of reputation (ratings of sellers) compared to the size of the catalog vendors challenging the using of notation as a proxy for reputation.
