The metadata structure and scrapers are all aimed at adult video. Although technically you can make your own, so maybe it could work for other things.

You can use it for any video/image but it can identify and automatically tag any adult video on their metadata database, so it makes organizing that kind of content particularly easy.

It has an O-counter, something I'd not use in an app that hosts my family videos.

In addition to what the other person said, it can perceptually identify videos which makes tagging your library a breeze.