
Be Online Smart is a campaign by the European Digital Media Observatory (EDMO) and its network of 14 national hubs. It aims to raise awareness about how algorithms shape our online experience — from the news we read to the videos we watch. Recommendation systems help us discover content we enjoy, but they can also limit what we see, amplify disinformation, and reinforce bias. By understanding how algorithms work and how they influence our online lives, we can make smarter choices, spot misinformation, and stay better informed.
The role of recommendation algorithms in accessing information, knowledge and content in the online world
Many of the tools – websites, search engines, social media networks – use algorithms to organise the information that they show to us.
What is an algorithm?
An algorithm is a set of instructions or rules that a computer uses to carry out a task, solve a problem or make a decision.
Algorithms are used in many different contexts online, and depending on the task at hand, they can be relatively straightforward – such as putting a list of names in alphabetical order – or highly complex.
Social media and search engines use recommendation algorithms to decide what posts or search results to show each individual user.
Music streaming services use them to predict what music a particular listener might enjoy, based on the other music they are listening to, or on when, where (location and device used) and how (time spent) they are listening. TV and film streaming services use them in a similar way.
Why do we need to know how they work?
It’s important to understand a bit about how algorithms (and those who build them!) shape your experience of the online world, along with your perception of and interaction with the offline world. Algorithms are used to make decisions about the content you see on different sites, and they have significant influence over the knowledge and information that you are exposed to.
Many social media networks and other websites make money through advertising. Therefore, in order to make more money they want to keep your attention by keeping you on their sites or apps, and keeping you coming back.
Therefore, their algorithms will often aim to show you content that they think you want to see, and content they think you want to share.
Algorithms: friend and foe
So what can you do?
- Don’t believe something just because it’s going viral.
- Read the whole story rather than just looking at the headlines on social media
- Remember that algorithms are often programmed to show you content you want to see.
- Question the algorithm: think about what is being represented, and what is being left out
- Look for multiple sources and learn to find ones you trust.
- Learn more about how algorithms work (and don’t work)
Some suggestions:
- The Secret Rules of Modern Living: Algorithms. It’s got a great explanation of how Google’s ranking algorithm works – watch the clip here.
- The Social Dilemma – Bonus Clip: The Discrimination Dilemma. Algorithms are built on bias. “They don’t predict the future. They cause the future.”The European Centre for Algorithmic Transparency studies the impact of algorithmic systems used by online platforms and search engines.
- Netflix explains how its recommendation system works