It seems like you’re publishing work from others. Then, why watermarking those GIF with your tumblr URL?! What is your excuse for stealing content “from the internet”? Sincerely yours.

The watermark is first because I created those gif from videos, but mostly to help people who like 2D animation to find other content they could like.
I steal nothing, I share content available by naming the original autors AND I even put the link of the original video (when I can) now. And even animators I know send me their work because they want to share it.

Perhaps, before being condescending, you should first open a dictionnary to learn the difference between SHARING and STEALING.
And, if you find it’s the same, perhaps you should go on war to shut the all fucking tumblr…