With the internet today, there are literally thousands of opportunities to make money online. These are great if you want to work at home or have time at work. They are a great way to make extra income when you need it. The key is finding the ones that are good and worth your time. For this, do your research in Making Money Forums and message boards.
Let's start with a very popular one. Google AdSense is a great one. Sign up for it and if you have a website or blog, you really don't need to do anything for the upkeep of those ads. Just send the traffic there and people will click the ads. Google will pay you for each click. However, they are very strict if you are clicking your own.
Another one for your website or blog is Kontera. Kontera works the same way. Someone clicks, you get paid. It's that simple.
You can always go to the Pay-per-Click way. While this is very time consuming, they are normally structured that if you bring referrals in, you can get a percentage of their clicks too.
There are many programs that you pay into. Some are very expensive and typically end in failure from what I here. Nobody said making money online would be easy. We all need extra cash. Extra income on a monthly basis can offset many costs that you might have.
And let's not forget the social networking sites that pay you for posting, writing, clicking and everything in between. Just like this site.
So all in all, find, research, join and start making that money. When you find a good one, share the wealth!!!