Market Watch

What You See Matters: Understanding 2021 Social Media Algorithms

In technical terms, an algorithm is a collection of rules and standards that define how a set of information operates. Algorithms help maintain the order and functioning of a system such as a social media platform. Social media algorithms help determine the relevance of information and posts in a user’s feed based on the account’s behavior and activity, thus, creating an inclusive and personalized experience for all.  

As social media features become more complex along with societal and individual activities, algorithms change unprecedentedly. Recognizing how each site and platform functions is crucial for maximum and meaningful audience engagement. This post explains how algorithms of top social media work in 2021.  


The architecture of Facebook’s algorithm is based on meaningful consumer involvement. It was designed to emphasize the relevance and popularity of local, family, and friendly postings over business ones.

It rates paid content individually, but the same criteria apply: engagement, consumer reaction, and topic matter relevancy. While user-friendly content is critical, the Facebook algorithm has lately focused on spam control techniques, limiting false and troll accounts.


Unlike Facebook, Instagram uses different algorithms, each tailored to the purpose and function of its features: Feed, Explore, Reels

Posts in an Instagram Feed and Story are evaluated by their popularity. These include the number of likes, profile/s tagged, and the place it is associated with if any. Details about the account who made the post are also considered. For example, how many times the user has engaged with the account. 

For the Explore Page, indicators such as how many and how fast the post has an audience engagement significantly more important than in Feed or Stories. User activity is also monitored to determine the relevancy of the post. These include things like what posts the user, bookmarked, or remarked on in the past. 


Twitter categorizes tweets into two: Top and Latest.

Top Tweets are posts that are most likely to interest the user, protecting individuals from becoming overwhelmed and helping them stay on top of the material that matters to them. The popularity and relevancy of tweets are factors in the algorithm. 

The latest Tweets are reordered in a reverse chronological manner, with the most recent Tweets at the top. It displays tweets as they are posted in real-time, resulting in an active engagement between accounts. 


Since Pinterest interlinks external websites, the domain quality, or how popular or active the site linked plays a crucial role in the algorithm. Considering the activity within Pinterest, Pin engagements and quality ratings are also determined.

The background of the content creator also greatly influences the organic growth of a pin, with the algorithm analyzing the frequency of posting and interaction of each pin, and how much the user engages with other accounts. 


In 2021, LinkedIn has made a huge change in its algorithm by focusing on personal and individual engagements instead of business, de-prioritizing material from mega influencers and allowing users to view content from individuals in their network who aren’t renowned on the internet.

Longer remarks are preferred over numerous reactions and content from business pages is not prioritized.

As more social platforms transition to algorithm-defined feeds to increase engagement, all social media users must have an in-depth understanding of these systems and ensure active and meaningful engagement. Fanexplosion is a company dedicated to doing just that. By analyzing an account’s social media engagements and activities, and working along with the platform’s algorithms, a user’s social media reach is maximized.