As someone who doesn't always know what to "say" on social media, and since we're all awkwardly getting used to Mastodon together, here's the best advice I've ever read about social media from the wise Buster Benson from a few years ago.
@kev_mcg Those are good words. It is important to post on social media about the things you care about. Whether it is politics, sports, or tacos, post about what makes you happy and / or think.
@kev_mcg I know what you mean. Social networks have always felt like places where everyone is yelling into the void that is the internet. But, I think that is outweighed by the importance of expressing oneself.