A system and method for increasing displaying time of online advertisements. Upon receiving a search request including one or more search terms, a search engine may identify a list of search results and display the search results on one side of a result page. The search engine may also obtain a list of advertisements and display the list of advertisements on the other side of the result page. When a user scrolls down to look at search results at a lower portion of the result page, the list of advertisements may be moved down, following the movement of the screen, so that at least a part of the list of advertisements may keep being displayed on the current screen. Since the online advertisements are visible to the user for a longer time, there are more opportunities for the online advertisements to get the user's attention, and consequently more opportunities for the user to click on an advertisement. As a result, the efficiency of online advertising may be improved.