Be the middleman

Many companies run "affiliate" programs: Post an ad provided by Amazon.com or Lands' End, for example, and receive a small commission every time your readers click that ad, go to the company's Web site and end up buying a book or splurging on a down parka. Referral fees -- the cash you get from these transactions -- vary (you can earn as much as 10 percent per sale from Amazon). LinkShare (www.linkshare.com) claims to run the Internet's biggest "affiliate marketing network," with more than 600 companies on its roster of advertisers. Another service, Commission Junction (www.cj.com), runs programs for eBay and Expedia.com, among others.