Yahoo’s says that search behavior, as measured by search query length, is now more “sophisticated and specific”: The average search query length was 1.2 words in 1998, 2.5 words in 2004, and is now 3.3 words.

As search query length grows, conversion rates rise, according to a study released last year by Oneupweb. Academic studies show user satisfaction also increases as search query length grows.

Yahoo’s future strategy aims at “driving deeper engagement” with its users through vertical search, personalization, desktop search and social search and believes the increasing sophistication of user search behavior supports the goal.

Get the full story at ZDNet