Just brainstorming, but I suppose that account/karma farming is still useful for the people that do that sort of thing.
Engaging in a heavily on-topic way in larger niche subreddits is probably a really good way to get that done. There's always a motive and it's always money and it always idiotic.
I remember having a clear vision of how this tech was going to ruin communities on the internet. I really hate that it has mostly come to pass and there's no good way to fight it.