Search services typically let you browse through a list of relevant subject categories or enter a set of words called keywords that define your particular information need. Search Field Let's imagine you're planning a trip to London, England, and want to search for hotels on the Web. The search service will return a list of potential Web sites featuring the keywords you entered. Sometimes the results will prove accurate, sometimes they will fall humorously off the mark.
Many search services present themselves as portals general purpose gateways to the Web.
These sites offer a range of popular services from travel and stock information to news, maps, games, shopping sites and more. How they work. Search services catalogue Web site addresses and related descriptions in electronic databases . When you initiate an online search, each service searches a database rather than directly scanning the Internet. This enables the service to return results faster and to rank sites in order of relevancy based on the search words you enter.