Jon Udell and the on-demand blogosphere

Jon’s latest is a great read. I’ve often wished that I could search just a subset of the web — I’d like to give google not a single domain to scope a search, but a list of domains. Jon’s article is a great articulation of that idea in depth — the list of interesting domains he focuses on is your blogroll, but the idea could be used with other lists as well.

Like Tom Evslin
, I don’t think I believe in vertical search engines. But I am certainly convinced that people/sites can provide an “editorial voice” on top of the existing search engines, by scoping a search to a set of domains.