If your site is rejected from Google Ad sense team means don’t worry there are many Ad network and affiliated ad network sites available in internet but one thing is important you need regular unique visitors to your blog from US, UK, Canada, France etc…
www.media.net contextual ad network is very popular ad network ( Yahoo and Bing ) . You can apply your website to this ad network site after 3 to 5 days they send email about your submission if your site is approved means they send user name and password to access your media.net acc. After you accessing your acc you can able to get some ads scripts with verity of size example square ads, rectangle ads, header ads, footer ads, left side and right side ads etc.. add this ads to your site header section, footer section etc,
www.addynamo.com is also contextual advertising website it is also like Google ad sense , media.net first your site needs some unique visitors more than 6 months or 1 your old website. Your site eligible to apply contextual ad network site. same as above you need to register your site to addynamo.com after that if your site get approved they will send you some passwords and username to access their account. You need to login using this password and mail id and get ads script .
Applying all this above ads you don’t get expected money means create some ad space in your website and sell ad space for rent in header section, left side or right side of your site with some offers (rectangle ads space, square ads space, etc )but more important thing is you need more visitors to your site then only visitors like to advertise their products in your websites or blog.