Abstract: Provided are a context related advertisement/information exposure method and a recommendation service system. The method includes the steps of: queuing information recommended (‘recommended information’) by a user on a queue list; selecting a candidate group (current list) to be exposed in an information region of contents page; determining an initial exposure number of each recommended information on the current list, and mapping each recommended information on the current list by the initial exposure number upon exposure of the contents to expose the same; comparing each recommended information that has been exposed by the exposure number with a reference value to determine whether its remaining on the current list is required; and determining a unit exposure number of recommended information that remains on the current list (residual recommended information), and mapping the residual recommended information by the unit exposure number upon exposure of the contents, to thereby expose the same.

Abstract: There is disclosed a nail file used to trim or polish the fingernails or the toenails. Conventionally, there has been suggested a nail file having attached a abrasive paper with a roughness on the surface of the stick shaped as a flat plate, or attached abrasive papers with different roughnesses partially, however, several problems have been caused, such as they were very inconvenient to use, and new file should be exchanged if any one of the abrasive papers runs out of its durability, so that it becomes a burden economically.