David Weinberger
The Internet is a medium only at the bit level. At the human level, it is a conversation that, because of the persistence and linkedness of pages, has elements of a world. It could only be a medium if we absolutely didn't care about it.
Personalization: the automatic tailoring of sites and messages to the individuals viewing them so that we can feel that somewhere there's a piece of software that loves us for who we are.
I'd rather have an aggregator than a filter - 100 different viewpoints from all over the world.