OpenX is expanding the beta program for the hosted version (Web based) of their OpenX ad server.
I’ve been using OpenX Hosted since the beta began, and I love it. The interface is the same as the version of OpenX that many affiliates have installed on their servers.
The convenience of never having to deal with upgrades is big to me.
The folks at OpenX also have a new opportunity rolling out called OpenX Market, which will enable affiliates to put their ad inventory out there for bidding by advertisers.
Sign up at http://www.openx.org/hosted.