9. A method of presenting search result items having varied prominence, the method comprising: presenting a first display area for displaying a first search result item and a second search result item presented on a search results page, the first search result item and the second search result item comprising an instant answer or a web result, each of the first search result item and the second search result item being a different set of components displayed as a group adjacent to one another on the search results page; identifying result attributes associated with the first search result item and a second search result item, the result attributes being historical data related to the first search result item and a second search result item, the results attributes being updated as historical data is gathered, the result attributes comprising a click-through rate; determining that the first search result item has a click-through rate exceeding a first threshold relative to a click-through rate associated with at least the second search result item presented on the search results page; adjusting the size allocation of the first search result item to a first greater predetermined size vertical space allocation; and increasing a number of components of the first search result item.
9. A method of presenting search result items having varied prominence, the method comprising: presenting a first display area for displaying a first search result item and a second search result item presented on a search results page, the first search result item and the second search result item comprising an instant answer or a web result, each of the first search result item and the second search result item being a different set of components displayed as a group adjacent to one another on the search results page; identifying result attributes associated with the first search result item and a second search result item, the result attributes being historical data related to the first search result item and a second search result item, the results attributes being updated as historical data is gathered, the result attributes comprising a click-through rate; determining that the first search result item has a click-through rate exceeding a first threshold relative to a click-through rate associated with at least the second search result item presented on the search results page; adjusting the size allocation of the first search result item to a first greater predetermined size vertical space allocation; and increasing a number of components of the first search result item. 11. The method of claim 9 , wherein the click-through rates are continually updated such that a size modification determination of a search result item may differ between queries.