By bringing theory to find out how much a porn Search Engine Google page appears on each list item to correct and appropriate based on the number of words that appear in each list.
By the theory of search terms that appear on Google Search Engine and hence each list item to the accuracy and appropriateness of the words that appear only once.
The detection theory of obscene word appears on the page Google Search Engine each list items for accuracy and suitable to satisfy the words appeared, but items.