link: This option returns a list of Web
link: This option returns a list of Web pages that link to the specified URL. You do not need to include thehttp:// syntax. link:www.intel.comphonebook: This option allows you to look up a phone number. phonebook:317-634-3456related: This option allows you to retrieve a list of pages that are related to the one you specified. This might for example, to find alternative sites to search in the same category. related:www.google.comsite: This option allows you to limit your search to a site or a domain. site:gov grantssite:uspto.gov utility patentGoogle provides numerous other advanced features, such as spelling, language translation, and more. Now that you have briefly reviewed some features offered by Google, it s time to turn to the Google Introduction to the Google APIYou should recall from Chapter 1 that you can call an XMLWeb service in at least three different ways using SOAPwith HTTP, using HTTP-GET (REST), and using HTTP-POST. The Google API is currentlyavailable using SOAPwith the HTTPprotocol. At the time of this writing, the Google API was in beta. Therefore, the examples in this chapter are written using the beta version. Signing Up and Obtaining a KeyBefore you can use the Google API, you must first obtain a developer registration key. Although obtain- ing and using the developer key is free, Google currently enforces a limitation of 1,000 queries per oper per day. To sign up to use the Google API and to obtain a developer registration key, go towww.google.com/apis/as illustrated in Figure 2-3.19Using
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