Adbrite - Sell space on your site for text ads
Amazon Affiliate Program
- Easily create a store or shopping section on your site instead of sending your visitors to Amazon. Amazon handles the shopping cart and fulfillment.
Associated Content - If you write a story, how-to, rant, etc. you can submit it to them and they will pay you $3-$20 per article if they like it
Azoogleads - Another ad program. They do have some decent companies lined up as advertisers. You provide space, they'll provide an ad.
BidVertiser - PPC (pay per click) program with a low $10 payout amount.
Bravenet - These guys offer a ton of services for webmasters and blog owners. Although I feel like I was spammed for a while, it has ceased and they'll pay you $1 for each person you send over
Blog - Start a blog and consistently write excellent content. With good ad placement, you may make some money. 
clipped from: www.dumblittleman.com 
- Sell your stuff on Amazon