They have despatched me a variety of "goodies" like that over the years I have been a user in this article (but I'm surely not an "employee" - I've hardly ever even been a moderator on any SO site).知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。The generic term is “marketing materials” or (t