How does it do that? How well does it perform? Some information and initial impressions are below.
Andrew Cohen, General Manager at Bit.ly, told me today that the company watches the huge number of links passed through its service and drills down to index their text content. Using the Apache Lucene-based technology developed at LinkedIn called Zoie, Bit.ly determines what the most relevant parts of every page are, excluding footers, spammy comments and other cruft. The company then checks those parts of the page for customer-entered keywords and determines the relevance of the article shared.
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