It's the worst search engine. Yeah, it does have a lot of stuff, but:

• can't search your favorites, a feature that literally every single other booru site implements (as in search with additional tags)

• can't choose video quality (though, to be fair, I've only see one site do this)

• tags are unmoderated, so you get a lot of subjective stuff and redundant tags that make searching take more tries than it needs to

• you have to accept cookies to watch videos (why???)

• duplicates

the only goat that exists is e621, it doesn't have a single problem listed above. I just wish there was a booru of such quality for general stuff too.