Some big ones were the greater anti authority sentiment, contrarianism, acceptability of expressing negative emotions. Reddit was often (though not always) better for polite formal-ish discussions, 4chan was better for processing your feelings about stuff via trash talking, dark humor and generally dropping your filters.
What part of imageboard culture did you enjoy and in what ways to you find it different than forums like lemmy or reddit?
Some big ones were the greater anti authority sentiment, contrarianism, acceptability of expressing negative emotions. Reddit was often (though not always) better for polite formal-ish discussions, 4chan was better for processing your feelings about stuff via trash talking, dark humor and generally dropping your filters.