Tad Williams (Score 1)

I hope that Tad Williams Otherland series would still be being read in 50 years time. Not least because my copies will be worn out by then and I'll need some new ones. His excellent characters as well as his vision on how the Internet will grow and develop in the future will make interesting reading for people of that time, especially since the books are set approximately 50 years from now. Like readers of today reading some of the early Asimov stuff, it will be great to see how far off the mark he is.