I had almost all my videos deleted a day ago. I made a list of what I was doing and what I was not doing to prevent this. 1. All the videos were uploaded on bought gmail accounts that were not phone verified. (Seller told that they were all created on different US IP-s). 2. I used a VPN (not HMA or any other superpopular) to log into youtube and create a yt channel and upload 2 videos. 3. I used Firefox portable to log into the accounts. (every time I close the firefox all the cookies and cache gets deleted). 4. I used google url shortener (all the shortened links took the visitor to the same domain). 5. I used the same decription and tags on all the videos but I spinned the order of them every time. 6. I used Video Spin Blaster to spin my videos (consist of 11 slides). What I did NOT do: 1. I did not change the user agent. 2. I did not clear the flash cookies (doesn't the firefox portable delete those as well automatically after closing). 3. All the url shortened links were from the same domain. 4. I had the same addons. QUESTIONS: 1. Does youtube track my addons and create a md5 hash from them to compare it? 2. Has YT automatically banned some keywords? 3. Does video spin blaster leave some footprint? The videos were up a week or so, I uploaded every day and then on monday, they were almost all deleted: "The account associated with this video is removed blabla". Thank you for answers and discussion. (BTW: I had over 300 videos up).