Alternative Pay-Per-Click Methods
Pay-per-click revenue generation is easy to define: you display adverts on your website, and when a visitor to your site clicks the advert, you receive a set amount of money for that 'click'. Hence, pay-per-click, or the abbreviated PPC. Sometimes a 'click' is worth nothing more than a few cents, though in high paying keywords it can be worth up to $20 - though these are rare.
The most common form of PPC is when an internet marketer displays PPC adverts within the content of their site, and sometimes within the body of individual articles. However, this isn't the only form of PPC advertising available.
One option, primarily with Adsense though being offered by other PPC companies, is to generate a search engine 'box' for your website. When someone performs a search, and clicks on a sponsored ad in the search page results, you are paid for that click. This can be surprisingly effective, especially if the search box is coded in to your website so that it fits the design and looks seamless.
Another popular option is PPC in feeds. If you have a Feedburner account and are using Google Adsense, you can set Adsense adverts to appear in your RSS feed. When someone views your RSS feed view a reader such as Google Reader, adverts will appear within the text just like they would on a website. This is a handy way of getting around the issue of people not actively visiting your site (and therefore not clicking on your ads) because they're viewing updated content through an RSS reader.
Both options work well and can be used in conjunction with the usual in-text-on-website PPC methods, so give them a try.