Few days back after mass bans i have decided to create survey to collect data from as many users as possible to see what we have in common and why we gettin our accounts banned. Its few questions regarding emails,proxies,# of follows ... so if you want help please fill the form: https://docs.google.com/forms/d/e/1FAIp ... Q/viewform But probably 2 days back i saw this tumblr post https://staff.tumblr.com/post/159683324 ... ollow-spam Fighting “Follow Spam” A quick update on one of our priorities right now: Getting rid of spammy followers. We’ve recently made a lot of headway, including shutting down several large spam rings that were responsible for most of these spammy follows. We’re always improving our algorithms to catch these annoying bots, but one of the best tools we have are your reports. If you ever catch someone spammy following you, you can use this icon to report them So from this i think tumblr ban because of follow. Its simple if you follow 100+ people per day (in long term thousands of ppl) there is always chance that someone not like your blog/consider it as spam and will report you then they probably analyze the account and ban all others that have similar behavior = mass ban. Still to be sure just fill out the form i will publish results in future so we can learn something from this. I have created thread on Tumblingjazz forum if you have by any chance access to other tumblr bot forum post this there to get as many ppl as possible.