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Can't really think of anyone, but statistically speaking, since there's free speech there should be a lot of hate speech. I'm not sure about other's, but here on hive there's little to non.

When web 3.0 goes mainstream there may be a bit more, if measures are not created to limit it. Besides, there's already lot of hate speech on web 2.

Other than that, I can't really think of any disadvantage. More may surface in the future though, you know how humans are.

!PIZZA

Yeah, that's normal though.
Thank you for the pizza.