It’s been in existence for 20 years now, so I‘m rather amazed by how little it has changed, while obviously the background work (scaling, security) has always kept up.
I love it, really do! And as I said, the trading of in game stuff, that doesn't have game impact most of the time, is more like a fun add-on for people who like it. Steam is a great service, something that represents the internet we could have had in a different time-line.