mathematics will tell you that given 10s of millions of private web sites, some will always be devoted to blogs or the equivilent...and that a small % will be by thoughtful, incisive writers. With care, Google and places like the link above will help you find more good ones than you can possibly read.

The internet/WWW has already changed much of life, and barring disaster, will do so much more in the next few decades that it is hard to comprehend.