I have a main Tumblr blog that I'm working on and it's an important part of my social media strategy. I don't want it to get closed down. I try to follow about 100-200 people per day on Tumblr. I haven't hit the 5,000 follower ceiling yet. When I do, can I just unfollow 200 people every day and follow 200 more? Can I do this every day without fear of my account being banned?