http://www.openx.org/ad-server/get-o...=hosted-launch
No download or installation required
OpenX Hosted beta is the same professional ad management tool used to control the advertising on over 100,000 websites around the world, only hosted on our hardware.
Free, up to 25 million ad impressions each month
Take full advantage of OpenX Hosted to rotate ads and manage your ad space for free if you're serving up to 25 million ad impressions each month.
Hosted packages available
We have three tiers of service available for publishers to choose from, including packages for professional or enterprise publishers who need additional volume or support.
Very, very cool.
