I'm just using a simple tactic: if the user follows more than 10k users, that means that he has no interest in my tweets and will probably never interact with m

I'm just using a simple tactic: if the user follows more than 10k users, that means that he has no interest in my tweets and will probably never interact with me. So, if I like what he is really doing, sure, I might follow him back. Otherwise, no way.