...What does this accomplish that a rotating monitor wouldn't? It doesn't even have niche application as a desktop publishing thing.

120% @ 2560x1440.

But it is more a convenience rather than necessity. There is so much wasted space, so why should I not use it to relax my eyes a little bit? :-)

The rest of the system (Linux) runs with 100% scale and (currently) no adjustment needed on my end.

120 to 150% on horizontal mode, 100% on vertical mode. Both 24" 1080p no scalling using Firefox or Librewolf.

Like above post, the ~150% is more due the excess wasted space and I usually don't tile windows unless needed.

Im constantly, and manually, changing the zoom of every site I visit.
As I block external fonts with uBlock and many visual effects tied to JavaScript with NoScript, It tends to vary.
Here, on GOG Forums, its mostly around 80% to 120% variation, depending on the how much text Im reading at the time.

An interesting question to make, why the curiosity?

Well, I wanted to see if maybe we could stir up some discussion towards whatever passes towards DevOps at GOG, given that I do say the website was made for a different zoom level and there is a lot of wasted visual real estate that could be filled with text.

Also, I think I recently accidentally undid the zoom and hoo boy, was that tiny.

Maybe the forum was made for a 800*600 resolution. That used to be a very common resolution.

It really depends on monitor resolution though.
I don't usually use GOG on cellphone, but the times I did, the experience in the store was fine - so it is well optmized to be responsive, by my little experience with it.
On Forums though, the cellphone experience is terrible, all fonts, icons and images, are small, as it is not optmized for cellphones resolutions.

Saying that as an argument that the Forum is not as well optmized and coded as it could be, and that they do have the talent there to code it right because the store is 'fine' for different screen resolutions in my opinion. (Of course that with 4K monitors people will suffer with small fonts, but this is everywhere by what it seems, and people that use 4K monitors are a minority still.) Forum experience with 1024x768, 1260x720, 1366x768 monitors seems fine to me.

There's the argument that you should always optmize everything to the latest technology, which is fine imo, but if it is not optimized to historically more used technology yet, how will people optimize it well to modern technology?

In the end that's why I use my own zoom variation from site to site, but this range is mostly fine.

Well, 2010 is around the time GOG "reopened", right? That would have been about the Phablet/Netbook era.

People need to state screen size, resolution and viewing distance to make sense though as the pixel density could change a lot, eg, I use 100% on a 1440p 32" from 2.5ft away, however I'd probably zoom in on a 4k screen of same 32" size. But the same density on a tablet may be fine because it's usually much closer to the eyes.

Just the vanilla 100% experience. Most of my foruming is done on a 14" 1080p laptop screen.

My monitor offers 1920x1080 but that makes text in games too tiny. I use 1280x800, which seems to be fine for most games, with the occasional problem game (like DAO or Orwell). For my browser, I use 125%.

Alright, that reminds me. I use a 25" G2524H from about 0.6 m away.

1920x1080 resolution, 27 inch screen (IPS), 100% zoom (default) both in screen and browser settings.