(Leaving aside the obvious Usenet) Gopher. GIFs. Webpages hewn out of raw HTML by amateurs. The time before 56.6 modems were ubiquitous. Walking away while a webpage loaded. Everything text based (MUDs, IRC). University computers offering you power you could never afford at home. Leaving downloads running overnight. The wild diversity of non-Ethernet networks. Physical computer retail stores. ICQ. Self-hosted persistent gaming servers. Napster being new.