For book/ebook authors, publishers, & self-publishers
If you are looking for ways to earn from the sale of e-books on your website, here is a way you can earn a little in the process. Each image on this board has a link at the bottom, taking you directly to that book's atcontent page. If you click the "share and earn" link, you'll be given referral links you can use on your website, blog, fan page, etc. Each time someone buys from your link, you will get paid. I think this is a pretty cool way to reward fans for spreading word of mouth. NOTE: These links go to the E-book PDF version of this series. Not the paperback.
You should check out Commission Junction.
Unlike Commission Junction, this site was geared toward blog traffic and selling blog content to other bloggers. It started out for books, then moved to bloggers, then refused to let people delete their blog posts off the atcontent website. I ended up leaving the site back in February of this year. I no longer recommend this service. It was a great idea, but poorly executed.