You can get a bunch of funny posts, the moderation is really good, people typically say what they think and aren't cowed into saying what is expected and so I like to believe there is some version of free thought happening. I like it, it's been a good experience. Yeah I blocked all the random stuff that I didn't like and it wasn't a problem. Any instance you choose is going to have something that you find obnoxious for whatever reason and you're going to have to block those communities. Additionally you're going to encounter some random instance that you find obnoxious at the instance level and you can block the entire instance.