Use the following income generating ads on your site to make some extra money.
 

Adtoll
An alternative to google Adwords and adsense. Advertisers, get 5000 clicks for $50.  Publishers, Make money by selling your space and Pay per click Advertising. It's pretty good compare to other online advertising services. It's free and easy to sign up.

Signup to Adtoll

WidgetBucks
WidgetBuck is one of the good way to generate income. You can include the widget you want to show in your website. for eg. you can pick up only PDA to show in your website or let WidgetBucks crawl your website and decide the appropriate ads for your site. WidgetBucks pay by paypal or check.

Signup to WidgetBucks

Adbrite
You can make some extra money using Adbrite, it works pretty much like Adsense, simple and able to be customized. It?s targeted, too . AdBrite is reliable and they pay on time.

Clicksor
It's also a good way to generate income. The volume hasn?t been what it is with AdBrite but that may be because they don?t have as many advertisers yet.

Chitika, TNX.net and AdEngage are also a good way to generate income.