Never met this before (maybe I just was lucky?) I'm commenting on Instagram photos respecting delays (2-3 minutes between comments) and limiting comments per day (I post not more than 50). My account never got banned with this tactics. But starting from yesterday I see that all my comments are visible for a few minutes only, after that they just disappear. Seems like Instagram is automatically deleting them. Comments are spinned, but of course even with this some of them may appear very similar or even the same from time to time (may this be the reason?). Does anyone have experience on how o avoid this? Is this a common thing on instagram? (as I said, I personally have never experienced this problem before).