Add tags: sfw and nsfw

I'm not sure if there was a practice of adding tags (nsfw and sfw), but this is really not enough. And I'm also interested in which category they belong to: general or meta.

Also for those who do not understand what these tags mean by themselves:
sfw is everything that can be shown to another person (a work colleague or relative) and it will not cause questions about the content.
nsfw is the reverse of sfw, that is, anything that contains obscene content.

I want to see confirmation that people want to get the content split into 2 sides (dark and light).

Also, I alone cannot cope with tagging all the content on danbooru, since I am not sure that the search will allow me to cover all the corners of the site.

By the way, here is an example of separation clearly:

sfw:

• post #6511385
• post #6405032
• post #6544209

nsfw:

• post #6547351
• post #6547339
• post #6547336

We already have this in the form of the Rating system. You can search by rating using "rating:" and General, Sensitive, Questionable, and Explicit. Example: rating:general. Searching by rating is a free tag, meaning it won't count against your search limit. Example: Hakurei_reimu kirisame_marisa rating:general.

blindVigil said:

We already have this in the form of the Rating system.

I didn't know about him.

We also have is:sfw and is:nsfw which will filter your search results into general/sensitive and questionable/explicit, respectively.