What is not allowed on Kickstarter?

I'm curious to know, what are the types of projects or activities that Kickstarter does not allow on its platform? I understand there are certain restrictions in place to ensure the integrity of the crowdfunding experience, but I'd like a clear overview of what is specifically prohibited. Are there any industries or types of fundraising that Kickstarter explicitly bans? Additionally, are there any guidelines regarding the promotion of specific products or services that potential backers should be aware of?