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Advertising-Supported to Subscription ModelNorthern Light was founded in August 1997 as a scarch engine, but a scarch engine that did more tlian scarch the Web. It also searched its own database of journal articles and other publications to which it had acquired reproduction rights. When a user ran a search, Northern Light returned a results page that included links to Web sites and abstracts of the items in its own database. Users could then follow the links to Web sites, which were free, or purchase access to the database items.Thus, Northern Light’s revenue model was a combination of die advertising-supported model used by most other Web search engines plus a fee-based information access service, similar to the subscription services offered by ProQucst Dialog and Dow Jones Factiva diat you learned about earlier in this chapter. The difference in the Xorthern Light model was tliat users could pay for just one or two articles (the cost was typically S1-S5 per article) instead of paying a large amount of money for unlimited access to its database on an annual subscription basis. Northern Light also offered subscription access to most of its database to companies, schools, and libraries.In January 2002, Northern Light decided that the advertising revenue it was earning from die ads it sold on scarch results pages was insufficient to justify continuing to offer that scrvice. It stopped offering public access to its scarch engine and converted to a new revenue model tliat was primarily subscription supported. Xorthcrn Light's new model generates revenue from annual subscriptions to large corporate clients. Its main products today include Business News, Discovery—which searches life sciences conference proceedings—SinglePoint—a scarch engine that runs on corporate databases—and HI Ajialyst Text Analytics, a meaning extraction tool used in business research applications.
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