Here is another way to earn money from your websites. This one is new and they are looking for limited publishers. You can earn 30$ per website monthly by placing an ad banner on five pages of your site (5 dollars per page, max 6 pages on each site, per month).
Thus far, today, an ad had been allocated to one of my sites, and I am looking forward towards my first payment soon.
They also give 10$ sign up bonus and a 5 Sterling Pound fee for each publisher referred.
If you are interested, here is their website.