Blog search

Came across a few different 'meta" weblog / blog search engines, including Bloogz and Technorati and BlogPulse . A search for "Louise Brooks" turned up a handful of results on each search engine, though some of the results turned out to be broken links.

I wonder how extensively blogs (LiveJournal, Blogger, Movable Type, etc...) are indexed? And how long lasting are the entries? Will someone be able to read this entry in ten or twenty years?

(Two other blog search engines worth checking out are are Blogdex and Popdex.)