  Social media platforms significantly influence ideological divisions by
enabling users to select information that aligns with their beliefs and avoid
opposing viewpoints. Analyzing approximately 47 million Facebook posts, this
study investigates the interactions of around 170 million users with news
pages, revealing distinct patterns based on political orientations. While users
generally prefer content that reflects their political biases, the extent of
engagement varies even among individuals with similar ideological leanings.
Specifically, political biases heavily influence commenting behaviors,
particularly among users leaning towards the center-left and the right.
Conversely, the 'likes' from center-left and centrist users are more indicative
of their political affiliations. This research illuminates the complex
relationship between social media behavior and political polarization, offering
new insights into the manifestation of ideological divisions online.
