OpenX is an advertising network where website owners earn by showing ads. It is a supply-side platform that connects publisher inventory with advertiser demand, built on direct publisher partnerships and supply-side intelligence.
It is for website owners and publishers who want to earn money from the traffic on their site. OpenX offers publisher products such as OpenXSelect and OpenXBuild, and its site has a Publishers page under its Audiences menu, where publishers can start working with the platform.
To start, visit the official site, create an account, and follow the instructions on the site to add ads to your website. Income is never guaranteed.