18. A method for sensitivity categorization of web pages, the method comprising: (a) performing an internet search query for each known sensitive word to obtain a result set of web pages for each known sensitive word; (b) selecting a predetermined number of top results within each result set; (c) combining together the selected top results to obtain a first plurality of web pages; (d) selecting at random a second plurality of web pages; (e) identifying a space of sensitive pages based on a sensitivity categorization of the first plurality and the second plurality of web pages; (f) identifying a third plurality of web pages that includes web pages on or near a boundary between the space of sensitive pages and a space without sensitive pages; (g) redefining the space of sensitive pages based on a sensitivity categorization of the first, second, and third pluralities of web pages; (h) determining that a given web page is sensitive when the given web page is in the space of sensitive pages; and (i) including the given web page in a marketing operation when the given web page is determined to be not sensitive and discarding the given web page for the marketing operation otherwise, wherein operations (a)-(i) are executed by a processor.
20. The method as recited in claim 18 , wherein the marketing operation is inserting advertisement in the given web page.