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I would treat it like any social media. More frequent/regular posts will gain you followers. You will gain a following by simply providing content and being present. To really grow, aim to provide value in your posts. Im no expert but generally I look at anyone who is successful in social media is for the simple reason that they create something that makes you WANT to follow them.

And don't worry about rewards. Too many people post garbage on here with the goal of rewards rather than content