Looking at the results from my recent poll, it's not surprising to me to see tumblr got first place. Now as to why I chose the others, Instagram, Twitter, Artstation, it's because those are sites that I am considering to use more actively since those are sties that I have already.
And I'm sure many people here must had noticed this, that DA doesn't seem as crowded or as active as it used to be before, and this is something that had started to become very clear to me recently, and I'd admit it does concern me a bit as someone who's trying the best at being a freelance artist and use my skills as a way to make money, cause I don't have any other job at this moment. I joined and created my first tumblr blog back in 2011, and since then I have been using it to post my works, which had been the same ones that I post here. However, I had began to also notice several of my works had been getting higher numbers than they get here on DA, which may not make much sense since I have over 11000 watchers here, while at my tumblr it's about 5000 followers combined from the my three art blogs that I have over there. my MLP fan arts for example had been getting the highest numbers ever, and I will admit I have over a dozen of drawings that I had only posted over at tumblr but not here, because I don't see a reason for me to post them. My Transforms and Star Wars fan arts do tend to get higher numbers too, but they seem more consistent numbers similar to when posted here,. One thing that does continue to fare better at least had been my original art, or fan works of characters that are my own creation.
Anyway, I am not saying I want to leave DA, I will continue to use and post my drawings, but I do want to use to post what I think are my best works, or stuff that took me a lot of effort to create and I feel it's worth it. Things like sketches and doodles though, that will most like be starting to be only at tumblr.
I will most likely also create an Instagram too, I had noticed that a lot of artists use Instagram to post their works too, and they can get surprisingly popular too from what I had found.