The Google Affiliate Network is the same thing as Performics.
Google bought DoubleClick and rebranded Performics to GAN.
EDIT: Also, if you have some good software you wrote yourself to distribute, CNET does a bundle deal on Upload.com with the Yahoo toolbar, if you go to Upload.com.
Be sure to notice the rules (bolding mine):
Q: Which products can be bundled with the Yahoo! Toolbar?
A: The Yahoo! toolbar can be bundled with most any Windows software except products prohibited by the CNET Software Policies and terms of the toolbar affiliate contract, like spyware, adware, peer-to-peer, hacking, gambling or other malicious programs or code or with any software or materials which are pornographic, defamatory or obscene; or alongside any other internet search technology or services.
Q: How much can I earn from distributing the Yahoo! Toolbar?
A: You can earn money for each confirmed installation of the toolbar by a US, UK, or Canadian user.
Q: When will I get paid?
A: Based on data provided by Yahoo!, CNET will issue checks on a quarterly basis.