The importance of electronic commerce based on the emergence of the Internet as a global distribution platform for digital products has become evident. In accordance with changes like this, the WTO has discussed the possibility of free trade of digitally delivered content products since the end of 1990s. The multilateral trade talks at the WTO for a predictable and liberal trade regime for digital products, however, has not brought any conclusive results for the various issues such as the exemption of tariffs on electronic transmission, customs valuation of and market access commitments for digital content, and application of trade rules for electronic commerce. (The rest is omitted.)