Finally, US website owners have an alternative to Google Adsense.Yahoo! announced the launch of The Yahoo! Publisher Network Self-Serve Beta - an alternative to Google Adsense.
This beta is by invitation only. Participants of the program must be a resident of the U.S., with valid U.S. Social Security number or Tax ID.
Jensense( http://www.jensense.com/ )has some more details on Yahoo! Adsense. They do allow custom tracking channels (similar to AdSense channels) and URL channels. There is a current limit of 50 active tracking channels.
It offers the same ten ad unit sizes that AdSense offers, although some of them offer a different number of ads (such as YPN's large rectangle showing only three ads).
You can also block up to 200 advertisers from showing up by adding their URLs into the ad blocking tab.
Jensense also posted screenshots of the Yahoo ads control panel @ http://www.jensense.com/archives/2005/08/look_inside_my.html . They looks so much inspired from Google Adsense. Let's see that how successful does Yahoo will be with its new service!