Way before apps were even a thing, around 2002-2004, I lived in the UK and shazam worked as calling service: you'd call 2580 (top to bottom on the center column of a phone numpad), it would listen for 30s, then would hang up and send you an sms with the name of the song. IIRC it would charge you something like 50p if it found a result.
One thing about load average on Linux which I never really understood was the inclusion of processes waiting for I/O, I never really got a satisfying explantation until I bumped into this post a few years ago: https://www.brendangregg.com/blog/2017-08-08/linux-load-aver...
Epic is kind of a thorn in the side for me when gaming (on a Linux distribution). There are a few Epic exclusive games that I'd like to play (Arise: a simple story, Journey, etc.), but they don't even have entries in protondb.
That's probably due to Epic not having a launcher for Linux. A few months ago(?), I read it had become possible to run the launcher through Wine, but I don't think that's changed anything on the porting side.
I worry that games which are released as Epic exclusives may fall by the wayside when/if they eventually become nonexclusive.
Proton has been a game changer for me: after many years on Linux only I ended up building a gaming rig a few years ago as I wanted to get back into gaming.The plan was to dual boot and only use Windows for gaming, but in practice rebooting all the time is just too much of a pain so I was using Windows almost exclusively there, with all the related frustrations. About 6 months ago I got myself a new SSD and made a fresh install of Linux with steam and Proton and I've been amazed a the performance and game support. Of course not all games work out of the box (and some not at all), but I haven't had to boot to Windows in months. And for the games I play the frame rate is at least as good as what I used to have on Windows (on a couple of games I do get occasional drops, but nothing too distracting). I play a lot of Assetto Corsa Competizione and my G27 steering wheel even worked out of the box!
In other discussion someone pointed out about passing a gpu to a windows kvm[1] and getting the output back to linux[2]. I never tried but seems really promising, might try it someday
It really felt like pure magic!