Small website means you have small traffic, therefore, even if you are earning form ads you might not be earning well. For small publishers, Adsense might not be a good choice because Adsense has a very high threshold and it might take ages to reach payment. Even Media.net and Infolinks are not a good choice. As a small website owner, you will have to use ad network that has lower cash our threshold. You need to try ad networks that have withdrawal threshold of $5-$10. You can try propeller ads, it has just $5 payment threshold, you can also try popads.net, which also has $5 threshold.