Site visitors can search entries by topic or demographic.

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You can search the programs by rating, topic, or by a simple keyword search.

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Autonomy (nasdaq: AUTN - news - people) already makes search engines that execute the kind of searches DolphinSearch is advertising, grouping documents by topic using a sense of context and perspective.

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Google also likely will make blog content searchable by topic, thereby driving more Web traffic to Google's traditional search site.

FORBES: Magazine Article

He also used Twitter ads to promote a book by venture capitalist Guy Kawasaki called "Enchantment, " targeting users who expressed interest in the book's topic, persuasion tactics, by tweeting about it or searching for related information using Twitter's search feature.

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