OneRiot is a search engine that I initially reviewed in November of last year. At the time of that review OneRiot searched the web and listed results based their current popularity. Today, OneRiot announced that it now pulls its search results from Twitter, Digg, and other social sharing services. This means that search results are based on what are currently the most shared and discussed links.

Applications for Education
I can see OneRiot being a good place for students to find and track developments in current news stories. OneRiot could also be good for students that are searching for the latest news to include in a report about a niche topic in science or economics.

Here are some related resources that may be of interest to you:
Worio Search – Discover More Search Results
Top Marks – Educational Search Engine
Links You Might Have Missed – Internet Search Tools