When Aggregation is Free
It is getting cheaper and cheaper to write aggregators (tools that take content from many different Web sites and display it in one place). In the not to distant future, it will be easier to collect and redisplay content than it is to create it.
What does the world look like when that happens? Think Google news for any topic. When you're looking to buy a car, you'll be able to find dozens of places that scour the entire web for the information you care about. When you hire somebody, there will be a hundred tools that collect and post resumes from all the job sites.
With so many tools available, it means the price will go to the marginal cost: $0. It also means that people will be overwhelmed by the number of aggregators. In an refreshingly recursive turn of events, we'll probably end up seeing aggregators of aggregators, helping you find your way through all the sites that were designed to help you find your way through other sites.
How does one succeed in this model? I am not sure, but I think it is by having the best tools to cut through the information and get to the knowledge that you need.
I enjoy having all my feeds on one place in Google reader, but they were misguided by releasing functionality that suggested additional feeds that you might want to read. Instead, the killer app is going to be finding and removing the feeds and posts that aren't important to you, letting you see the good stuff sooner.
Update: I'm not sure how what I described is significantly different from search, but I think it is. Perhaps the topic for another post.