Kedrosky: Dark matter and the long tail

So blogs and other forms of microcontent are part of the long tail, and search technologies and filters expose and surface them, right?
But there are others kinds of long data content/data that Paul Kedrosky calls “dark matter” and he writes about how they’re now discoverable–and trackable–via RSS feeds.
“Syndication technologies make it possible to cost-effectively and usefully expose informational dark matter, which is more than press releases and blog articles, but is just about every kind of change of state you can imagine in our physical, social, and organizational environments.

What would you (or your organization) monitor if you could? What would like to know about that you don’t? What happens on a daily basis that would like to track but you can’t? What if you could search all that information prospectively and retrospectively?”

The PubSub guys talk a lot about applying prospective search to what Kedrosky might call dark matter–press releases, earthquake reports, traffic delays, etc. Feedster’s talked about this as well, especially in terms of listings, and when I first met Phil Wolff, almost two years ago, he charmed me by talking about RSS feeds tracking machines–like subway trains.

I’m curious what kind of dark matter, to use that term, people would like to see surfaced–I have trouble thinking of much that I would value in my every day life, but a lot I would value on a sporadic basis (like travel delays when I am taking a trip.)

And doesn’t this pre-suppose a mobile platform for true usefulness?

Thoughts, anyone?