The Sphere search engine delivered blog posts based on algorithms that combine semantic matching with authority factors to deliver results relevant to the search query.
allowing users to seek blog posts related to news articles based on the contents of a particular web page they're viewing.
The search engine required that JavaScript is turned on in the visitor's browser.
Sphere had a variety of content distribution venues among major publishers where blog results from Sphere were presented, contextually, within news stories or other content.
In April, 2008, Sphere was acquired by AOL to be operated as a wholly owned subsidiary.