Yahoo Publisher Network as an Adsense Alternative

Currently, Yahoo Publisher Network (in my opinion) is the best Google Adsense Alternative and the first place to go for all publishers who are not fortunate enough to use Adsense (may be because they are not accepted into the program or their account is banned by Google).
The Yahoo! Publisher Network (abbreviated as YPN) is a beta network, launched on August 2, 2005 by Yahoo!. As the service is currently in Beta, it is currently only accepting US-Based publishers; it is believed that Yahoo! will expand this when the program comes out of Beta. YPN provides cost per click contextual advertising, similar to Google Adsense, as well as various tools and services to assist publishers in building and improving their websites.
Yahoo Publisher Network will feature:
Advanced ad targeting and display capabilities can improve the relevance of your results.
Ability to filter competitive listings from appearing on your site—to protect your business.
Access to a wide range of tools, services and programs that enable you—and your users—to get the most value from your site.
Four ways to collect your revenue, including a PayPal option that lets you get paid more quickly.
Many reviews (that I have been gone through) suggest that Yahoo Publisher Network work on par with Adsense. While Adsense can produce more relevent ads because of their huge Ad inventory and better context matching algorithms, Yahoo Publisher Network is some what behind on this end (and seems its catching up). So this means you cane xpect better CTR with Adsense than YPN. But Yahoo Publisher Network pays more than Adsense per click on the same niche. Over all, Yahoo Publisher Network is the first place to go for all publishers who are not fortunate enough to use Adsense.