On OSDN’s websites, ads are posted directly or by advertising agents such as AD networks. The major advertising agents who post ads on OSDN’s websites are listed below. Please take note that there may be distributions made by the advertising agents that are listed here.
As to ad distribution, in order to precisely count the number of access, technology called “web beacon” (also called “clear GIF”) is used.
There may be times methods such as “retargeting” and “behavior targeting” that use web browser cookies are incorporated to effectively match the distributed contents and the viewers. By tracking cookies, viewer’s web browser can be identified, but not the viewer. The distribution control by tracking cookies can be invalidated by changing the configuration of the user’s browser and on the agents’ sites.