So this is kinda freaking me out a bit!

I just noticed that one of my deviations (http://yutaki.deviantart.com/art/Chinese-Zodiac-Signs-Buttons-305734158) on DeviantArt which is the Art for my Chinese Zodiac Button Set has over 2000 (!!!) Downloads! It’s one of my least popular Pictures and hasn’t even 20 favs and only 800 views! Like how is this even possible only 900 views but 2000 downloads! 

Did somebody use them to make buttons for themselves? Is it linked somewhere? I’m really super worried, so has somebody had the same problem once? How can I find out? I usually don’t have a problem with people downloading my Art but these numbers are just really strange, so I actually would like to wait before I delete or do something else with my Button picture…

Please if one of you knows something or can help me I’d really appreciate it!