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Yup, as I wrote above, they prefer longer stories. Secondly, subscribers of photography subreddits prefer passive watching mode scroll-click-scroll without leaving Reddit. A longish post about a certain subject shared in a relevant subreddit can be a solution. Like, old cars images post in a subreddit about old cars, for example. A post about a recent event can also be helpful.

I will dive more into it when I have time

You can keep this way of raising $HIVE in mind and, at some point, you can get a good idea.