As I noticed there are 2 typed of tagging one is to protect weak hearted from extreme contend and another is to atract potential fans.

Since this site is not for weak minded there is no need to mention something what is not the focus of the story You will be misleading people. Think about tags as about advertisement which you use to atract your audience. and expect that people may be pissed if you fail to deliver what promised.

Con non-con is usually written as con/nc it applies to everything in the story. including sex and death. whether it is consensual or not, depends on the final everything else doe not matter if she was protesting up to the last minute when she finally liked that.

Rape can be consensual as well if woman wants to to be taken by force or pretends to disagree.

I am not sure what semi-con tag means but I guess it should be used when something like blackmailing is used without physical violence
so that victim obeys but doe snot enjoy it

Tagging characters is probably unnescesary, but you can use f/m/g/b for female/male/girl/boy submissive/passive and use capital letters for dominant/active characters


Also you can always make up your own tags.