It's where the nice cars are, period. It's still a curated site, though it doesn't seem like it sometimes. They have a real soft spot for anything Porsche or Alfa, so sometimes some questionable heaps slip through.
Where else are you going to find something like this, almost any day of the week?
https://bringatrailer.com/listing/1967-mercedes-benz-230s-4-2/