Top 17 Search Innovations Outside Of Google

"There are an abundance of new search engines (100+ at last count ) — each pioneering some innovation in search technology. Here is a list of the top 17 innovations that, in our opinion, will prove disruptivein the future. These innovations are classified into four types: Query Pre-processing; Information Sources; Algorithm Improvement; Results Visualization and Post-processing. [Some of these innovations are present in various Google properties, but are either missing or available only in limited form in the main search page...]"