Lets start with this. Your explanations are very rushed but the two first are understood quite clearly. However the metagaming rule is not exactly correct. You can use advert to advertise for people to meet you at the fountain f.x. if you're selling things by the fountain. Giving away your location in-game through OOC is actually meta-gaming
Okay mate, you literally copy/pasted your first two and just changed the rule name, please be more specific.
For the last one you really need to understand what it reads because you completely misinterpreted that.
is getting raided." this is refering to meta gaming rules which you kind of showed earlier that you don't quite grasp. Player X is breaking the meta gaming rules because he used the Out Of Character channel to relay In Character information. If he were to do it correctly he would have asked for help in /advert or one of the other In Character channels.