Wondering how to break down Mastodon silos? Here's how:
1. Create accounts on multiple instances, and watch their local timeline. Interested in art or astrophotography? There's an instance for that.
2. Have one instance you consider your "main" instance. Follow everyone you find interesting from other instances on that account.
3. Reply to people's toots. Yes, seriously. Mastodon is about connecting to people. Like someone's art? Tell them what you like about it. Someone has an insightful view? Tell them which parts resonated with you. It might make you feel vulnerable, but it's really good in the long run.
4. Cultivate who you follow. This means actively finding people who don't share your experiences, backgrounds, and identities. Following people who have diverse experiences will put more interesting people into your personal timeline, which gives you more interesting people to follow.
5. Actually post some toots. Use hashtags. Hashtags are the only parts of toots that are searchable. The text itself doesn't show up in search results.