Getting a raise is harder than getting a promotion. Think about it from your boss’s perspective, would you rather a) pay more money for the same service, or b) pay more money for additional responsibilities. Regardless, sometimes a raise is in order, especially if you have worked for several years without one. Check out Ramit Sethi’s guide on asking for a raise.
Add Google AdSense advertisements to your blog or website. Google’s AdSense is a revenue-sharing opportunity for small, medium and large web sites that places ads for goods and services that are relevant to the content of your site, targeted to the people who frequent your pages. In turn, you get paid a small amount when the ad is either displayed on your page, or clicked on.