I really fucking hate this shit and this is exactly why I rarely make gifs anymore. People are such pieces of shit about reposting content from people and then berating you for expecting credit for things you made.
Piss off, tumblr, and grow a spine if you have to anon that childish bullshit.
Why would I want to make content for people who just want to take it for themselves and say my time and effort is worth nothing? Christ.