the commercial that you saw is automatically added.
If you look at every commercial then you see, that there are things shown that you searched in the web or sites that you visited.
e.g.: I visited a few traiding-sites. And now i get commercial for trading-sites.
That is the might of the internet. They know all about you. And when you go onto DO, then you will probably get commercial of DO.
DO dont pay for a commercial on this site. They pay the developer of this technique that their commercial is seen by them, who visit sites like DO
