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Some of them are pretty good. It takes time, but you have to work the networks, usually in Discord, upvote some other stuff, and then other people upvote yours. If you write awesome stuff, you could get curated by one of the trails and make some nice coin.

On another note, I took an interest in bidbot just recently and have been pleasantly surprised by the results. Much less time consuming than curation trails, but both can produce pretty decent results, especially when used together.