Conducting a date-range search with a Web search engine has never been straightforward. In fact, one of the biggest challenges has been identifying the true date of a Webpage. Date searching on the Web, while not always reliable, can be useful in certain situations. On Google's advanced search page, there is a pull-down menu for limiting the search to "Web pages first seen in the" past 24 hours, week, month, 2 months, 3 months, 6 months, or past year. Other search engines support more limited forms of date searching. Yahoo!, for example, has a pull-down menu on its advanced search page, letting you limit your search to pages updated within the past 3 months, 6 months, or year.