You can even generate affiliate revenue from your parked domains

This is a trick most domainers aren’t aware of

Parked.com allows its parking customers to place custom content at the bottom of their parked pages. Custom content, meaning, you can put whatever you want there. At the very least, I recommend adding some relevant text content to the bottoms of your high traffic and/or high value names parked at Parked.com – this will help with SEO, will make your site more useful, and will garner more trust from your visitors. In addition to content, you can also use this space to put links to affiliate programs. This is an excellent way to earn even more money from your parked domains. I am only aware of this being possible at Parked.com.

Here are the top two Affiliate Programs you should start with:

ClickBank
ClickBank offers eBooks, systems, videos, and other electronic products for online purchase. Promoting ClickBank products is a good way to make money online. There are thousands of products in most every category of interest. Find products that are in line with the interests of your users and then promote those products.

If you are a domainer, here is a great way to get started with affiliate marketing

If you own a Domain Name industry blog, newsletter, domain, or web site, you can easily earn more money by writing a blog post, web review, or email newsletter promoting the Beyond Domaining system. After signing up at ClickBank, you’ll get a special URL to use in your promotions. Do a quick search for Beyond Domaining and then promote it on your web properties and/or newsletters.

You can also use your ClickBank affiliate links to promote the Beyond Domaining system in your signature panel, and in your posts, in forums such as DNForum and NamePros. My system is highly relevant to other domainers and the conversion rates are excellent because we have good word of mouth from delivering a high quality product. If you have a domain industry blog or web site, you can make some good money promoting the Beyond Domaining system through affiliate links from ClickBank to other domainers.

If you don’t like ClickBank, or if you want the ability to promote two different branded Domain Development products, we also have an affiliate program available through PayDotCom (many non-U.S.A. based publishers prefer PayDotCom over ClickBank).

If Domain Development is not of interest to your users, you can still find thousands of other interesting electronic products that will appeal to your users. There are electronic products at ClickBank covering everything from weight loss, to online gambling, to the stock market, to search engine marketing, to affiliate programs, to stress reduction, to getting out of debt, to relationship problems, to seduction techniques, and more. Every Domainer and/or online marketer should consider a ClickBank promotion component.

Commission Junction

Commission Junction is another place to look for affiliate programs. Commission Junction’s product list is vaster and is not limited to electronic products like ClickBank’s. They have all sorts of things from electronics, to travel deals, to pet food, and more.