It's definitely relative; my perception has shifted significantly over the years. Obviously there is a lot more to it than subscribers, though. At the moment, to me anything below 100k is just starting out. I feel like above 100k people will start to take you seriously but you can't have a big head because really it's not even that big anymore. Someone above 500K is hard to ignore and people will take you pretty seriously. Then again, I thought the same about 100K when I passed that milestone so it's probably totally relative. I feel like at the moment, 1 Million is the "big one", where no one can really ignore you any more, and it's seen by many as having achieved the highest level and anything past that is gravy. Above 10 Million is just like A-list celebrities in Hollywood, where there are a few of them but you don't need to be there to still be very successful. I'll be interested to see how my perceptions change after 1 Million.
