Naaroo’s core engine, Xmind is a specialized search enginedeveloped by Onnet which evaluates the significance of a document based on ananalysis of attention developing in each blog. Like many search engines, thoughit evaluates documents with relevancy and recency, the most significant featureof Xmind is its ability to provide search results that reflect “how much attention is beingpaid to a given document?” This element is called “attention.” Collecting people’s attention, which changesalong with time, Xmind uses a search ranking algorithm which is similar topeople’s thinking processes.

1) Search result close to people’s thoughtsbased on people’s attention:
Placing considerable emphasis on “how much attention is paid to ablog,” Naaroo reflects that attentionin its service. Collecting people’s attention, which changes along with time, Naarooprovides search results that are similar to people’s thought.

2) Reliable search results with thefocus on bloggers:
It is difficult to evaluate the reliability of a document onthe basis of the search result. Though it is easy to find a document whichfeatures similar contents to the keywords, it is difficult to know whether thedocument contains reliable information. Naaroo, however, thinks that a document’s reliability can be determinedby the blogger’sinformation. By analyzing a blogger’s posting patterns, the Naaroo Mentor serviceprovides not just mere documents, but documents created by bloggers who havespecial knowledge.

3) Provide blogger’s activity:
Based on the frequency and period of posting for fourconsecutive weeks, Naaroo explains a blogger’s activity. According to the bloggers’ levels of activity, they are classified as “passionate,” “diligent,” “persistent,” “relaxed,” or “sleeping” bloggers. This classification can be changed according to how actively ablogger puts posts on his/her blog.