Once you have a website or a blog, you could be make money displaying ads . The best available today is Google Adsense .
Now Google Adsense has introduced a new ad for RSS Feeds . If you already had a feed account with Feedburner (now owned by Google), you could move your feed management over to Google.
Although Google has not mentioned what would happen to Feedburner in the future, they are encouraging users to consolidate all website ad & feed services under Google.

With videos becoming an important part of blogs, websites and freelancing media, they could either be a standalone post or could be a strong eye catcher to your normal post. Much similar to any other advertisements, you could put advertisements on your videos as well.

Adbrite allows you to earn money and monetize your videos. And you do not need to install any code on your side to start advertising and earning money. You need to sign up with Adbrite & create a publisher account .