Since the content is curated strongly by your likes and dislikes, I am afraid your children might actually get some nasty stuff there. There's psychotic horror and soft porn. I don't think I'd trust my child with it unless they're older than 14 or so.
The dancing stuff is pretty mild and I'd say even constructive for children.
The allure, is hard to describe. The content I see is very human, people describing their experiences, doing harmless jokes on each other, or teaching something. How it differs from YouTube is that it is much more strongly tailored to your likes, and due to time constraints, skips the chuff and gets to the meat of things quicker.
The dancing stuff is pretty mild and I'd say even constructive for children.
The allure, is hard to describe. The content I see is very human, people describing their experiences, doing harmless jokes on each other, or teaching something. How it differs from YouTube is that it is much more strongly tailored to your likes, and due to time constraints, skips the chuff and gets to the meat of things quicker.