ok i thought this was a post about affiliate programs that don't require a website and money. But i will post some that i know of though. not sure if affiliate links are allowed so mods edit them out if they aren't or I will if you tell me
moreniche - pretty good affiliate site they pay around $25-175 per sale depending on which product you promote.
Zlio - Gives you a free estore when you signup, pays around .10-.30 cents if someone clicks on a item in your estore and pay varies on sales.
last but not least
auctionads.com
- if you used ebay you should know about this program already if not it's the exact same thing as ebay affiliate program except its easier to use, faster to apply to a blog and/or website, and they give you a $25 signup bonus.
easiest way to do this without a site is pick which affiliates you want to use go sign up for a blogger account or go use a blog of your choice, and write a few articles about one of the products you are trying to promote. (one article a day is fine), Go to ezinearticles, or just google for some articles if you don't know what to write about. do NOT copy the article you need to rewrite it, not all of it but at least some of it so google doesn't see it as duplicate content.
Once you are done rewriting the article add it to your blog
Now you got to get your blog noticed you can do this by going to feedburner first and getting a RSS feed for your site, after that submit your blog to pingoat.com (this site pings over 50 blog services all at once), add it to your my.yahoo.com, and submitexpress.com to get it listed in the top 20 search engines.
don't forget to submit a story about your blog to digg.com and think of other ways to get your blog noticed and there are many other ways to do this you just got to look around and think outside the box