Great, even more hipsters coming...

Is dtgreene running it? It's a social media mainly populated by people between 14 and their early 20s, known for being heavily liberal with a nonsensical idea of humor. It's become stereotyped as everybody being a SJW who overreacts to everything and acts depressed about life to the point that its own users mock themselves.
Basically, a younger version of the writers of Buzzfeed.
I can't see how anybody from there would end up here, honestly. Seems a bit odd that GOG would want to reach out to that clientele.

https://www.youtube.com/watch?v=1yPfmRoSfpA

Since the video is from 2012, you'll have to add the politically correct outrage sect and got the picture.
It's a breeding ground for destructive young people that like to organize hate-mobs and never actually work or add anything of worth to society.

As much as I want to criticize him for being critical, he's right.
They're notorious for stirring up general upsetness based off of flimsy or inaccurate information. They're willing to sign petitions and talk loudly on the internet, but never actually get anything done and openly admit that they usually have social issues. If you need an example of how they work together, look up pictures of DashCon.
And this, mind you, is coming from somebody who usually tries to not hate on people.

Didn't some Tumblr spill into twitter as well? (The part you described) I mean, look at how some people overreacted at a backer's joke in Pillars of Eternity last year.

Tumblr Dash Con Video

Bwahaha, thanks for this mention.
So many clichés at once!
Also take a look at 10:30, I guess it's the reason why you can't find many pictures of the DashCon via duckduckgo/google image search, those people are some of the most censorship happy authoritarians around.
I wonder why they are making "fun" of their ideological cousins, although I'm still not sure if this is humour since it's so awkward.

Yep, same people. They seem to be trying to take over every social network by being the loudest and categorically most offended ones while dishing out the meanest harrassment all the time on the go, it's like a crusade with tumblr and twitter being their holy ground and base of operations.
You can just wait for them to be recognized as a religion.

Actually, I have never used tumblr. (Finding a tumblr blog through a google search or a link from another site like reddit doesn't count.)

It's now infamous for this picture. It's all anybody who wasn't there knows of it, and it's all that SHOULD be remembered.
The mistakes and issues it had are almost hilarious to read albeit rather tragic.

I don't even know what tunblr is ...

http://www.gog.com/forum/general/gog_has_tumblr/post17
Social media. Originally meant for artists, but devolved into whatever the heck it is. It's known for being a hive of SJWs, Pepe memes, and offbeat humor.

yea, I think it's better that I'll never know what that damn thing is ...

Yup.
I apologize for my generation. We're working through some things.

Tumblr and Twitter are places where common sense goes to die.

I'd rather be here on the forums. As a plus there are fewer narcissists here.

This was also my first thought. This was my second.

I gave up reading after that.

Tumblr is the most popular blogging platform, by far.
Stats from 2012, via xkcd.
Current stats, via Google.

Anyone who says Tumblr users are radical / extremist / in any way fringe is full of shit.

Wishing death on people isn't cool. Go live in a fire, non-fatally, NATO scum.