Getting a free PSN card might sound impossible at first, but since many competing internet companies, such as google are tying to increase their presence, they are will to give consumers such as you rewards for free. Although it might require a bit of effort, you can get one in a few minutes just by simply completing their surveys or testing new products or apps.
These opportunities are usually very rare, but this site will teach you exactly what needs to be done with a short and easy to follow tutorial.
For what you are getting in return for a few minutes of your time, I would say this is well worth it!
Now, to summarize how this works.
- A business (Facebook for example) wants more views for one of their videos.
- The company (Facebook) contacts one of the sites featured here in order to get access to a large number of users
- They offer them cash for every user that watches the video.
- The website pass this information along to you and asks you to try the game.
- You complete the requirements and receive a PSN card (as you did the work!)