banners and skyscrapers advertisign to web hosts and webmasters
The web-cp web hosting control panel project is offering banner (468x60) and skyscraper (120x600) advertising. Currently, it can be bought by individual CPM ($8/cpm) or in quantity of 10 CPM ($5/cpm). Your banner ad will be displayed at the top of the page and will be the only advertising on the page.
web-cp is a web hosting control panel written in PHP and released for free under the GPL. The audience on web-cp.net is mostly web hosts who are in the market for dedicated servers, colo space and hosting-related services (such as outsourced tech support, graphic design, templates, etc).
Not only will you be advertising your company but you will be supporting an open-source software development project.