It's just one of those things about new inventions that we don't really know what they're going to be used for, how they'll change the world, until they've been out there for a bit and we can observe what people are actually using them for. for example, this internet thing we're on right now. Most seem to think that it's for porn and stealing MP3 files.
However, I think there's a very good argument that what it's really going to change is education. For at the moment we gather everyone together in one room and someone talks at them. This is the essential education model and it's been the same for the past few centuries. What the internet allows is that people don't all have to be gathered together in order to be talked at.
Have a look at this site for example. Free math help is their opening offer. But that's really the some on. What they're really offering is one to one tutoring over the 'net. Maths (and they work on other subjects too) is no longer something you learn in groups of 20 or more. You can work at your own pace, with guidance.
They go as far as college algebra and factoring polynomials as well. I really do think that this sort of use of the internet is the wave of the future: so much so that I think the industry that will be changed most over the long term will be education.