The Pew report on the Internet links to Imagining the Internet, an intriguing idea: a database of predictions about the net from the early 1990s. It would be nice if it was easier to browse the database, rather than have to think up search terms, but it's fascinating nevertheless and the search seems to work well: education, music, movies, terrorism, etc. There's a lot hidden away in there.
You can also submit your own predictions, for what it's worth.