Many bands think of social media as just a numbers game. They post anything and everything just to fill up the space. But if you suggested that they did the same thing with their albums, they would think you were insane. To me, that's part of the problem.
I realize that Facebook, Twitter, etc. make it seem like you are rewarded for spamming your followers. But you have to think beyond the algorithms. Your name is attached to each of those posts. And while not all of them will be fantastic, it looks bad when people can tell you are not really trying or don't think much of your audience.
I have unfollowed a number of artists who have nothing to say and decide to demonstrate that 17 times a day. If your posts are crap, cranking out more of them won't help things. I don't go to restaurants thinking, “Well, the food is disgusting, but at least the portions are huge.”
Shoot for doing one post a day that is quality. If you can expand to two or three posts a day and keep the quality, great. If the only way you can post multiple times in 24 hours is by giving up on quality, then don't.
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