Ah! Sorry, griefing is a term for intentionally causing grief to someone else or preventing them from playing the game in some fashion. Say purposely wearing gathering gear in a dungeon for example so the sprout healer who does not know better is unable to heal them fast enough, so they may think they are not good at the class. Stuff like that. If you yourself is also new to the game that is perfectly fine. The way you had made it sound in some of your posts, it sounded like you were 'playing your way' by purposely refusing to do certain things because they did not feel right, or appeal to you. When I mentioned taking advantage, I mean it in terms of, purposely doing things that are vindictive to people who do not know any better. As the example I gave prior, where a person is being hurtful and preventing someone from participating in the content due to the purposely not raising them as a healer.
Aye Samurai is a pain in the booty, you are suppose to build up the buffs but they fall off really fast, so if you are going through say msq roulette it can be horrible. I have not figured out how to make that class feel more smooth during those dungeons/raids. The cutscenes being in such weird places as well as every buff or debuff you place on enemies disappears and some will run through to the cutscene wall and activate it at the worst possible times.
If you are playing a melee class I suppose it depends on the class, I am still learning alot of them because I wished to know more in depth what to look out for. For example I know ninja keeps up a pinwheel, and needs to be able to use hide in order to refresh the skills to put it in lamens terms. So I know if I am tanking to make sure you I do not chain pull, they call it. Where someone grabs some enemies, but before finishing them off they start to move again which could cause those playing grief. It isn't a huge deal I guess, but I want to be able to understand how to allow people to have fun and not miss out on being able to see some of the skills in action.
Honestly dungeons can take however long as possible. I am in no rush. I know a bunch of people will go through, not even say hello, and disappear past the exit portal before I could even thank them for their time. There are all kinds of people you could get, I don't stress too much, I really enjoy watching people learn stuff, or help them if they ask for advice or anything. I am kind of bummed out when people refuse to wait on others during content especially stuff that would literally take a few seconds for the other to catch up, so they could experience the battles. Even if I have to hard raise everyone, I would rather spend the entire raid raising people so they could participate in something they may have been really invested in story wise, or excited to battle for example: The puff of darkness, within the world of darkness.
The way you were making it sound, made me think you were purposely not using skills to prevent others from physically taking part within the content. Carry on. Have fun out there on your adventure, just don't be unkind to those along the way.