It is true the internet offers much promise for information exchange and gathering. I wouldn't be able to do my job without it. Or at least, it would take a lot longer to do it without it.
At the same time, I think a lot of people use the internet to reinforce their lazyness. Not just physical, but social. The internet, for many, becomes their social circle. Then there ability to converse and exchange information with people in person becomes eroded. Meanwhile, while on the internet for their socialization, they do not think to use this powerful resource to expand their minds. To learn about new things. Or to learn new things about concepts they think they are very familiar with.
There's also a generational gap. While it is true more and more baby boomers, and even some elderly, are tapping into the internet, it largely remains foreign. These people still get a majority of their ideas from newspapers, books, Television, etc. And really, I think the generations need, to some degree, to get on similar pages. When the baby boomers retire society is going to become very interesting with Social Security just being the tip of the iceberg.
But, Felix is right. There is much that is not taken advantage of that might give people a better understanding of the environment they exist in. But, is that likely to change? I'm not optimistic.