When can you say that you're "good" at League?
Not great, not just average, but good.
At what rank are you not "bad" at the game anymore, to the point where someone below you in rank might look up to you for pointers or the like.
I hear a lot of people say Platinum, high Platinum, Mid Diamond, and High Diamond. I'd like to think that the cutoff is Gold, because I feel like I know what I'm doing, but what do I know, I'm Gold.