<P> Users are allowed to suggest corrections using the "Send feedback" button . These suggestions are reviewed, and either accepted or declined; the user is informed when this decision occurs . </P> <P> Google collates business listings from multiple on - line and off - line sources . To reduce duplication in the index, Google's algorithm combines listings automatically based on address, phone number, or geocode, but sometimes information for separate businesses will be inadvertently merged with each other, resulting in listings inaccurately incorporating elements from multiple businesses . </P> <P> Google allows business owners to verify their own business data, and has also recruited volunteers to check and correct ground truth data . </P> <P> Google Maps can easily be manipulated by businesses which aren't physically located in the area they record a listing . There are cases of people abusing Google Maps to overtake their competition where they place a number of unverified listings on online directory sites knowing the information will roll across to Google (duplicate sites). The people that update these listings do not use a registered business name . Keywords and location details are placed on their Google Maps business title which overtake credible business listings . In Australia in particular, genuine companies and businesses are noticing a trend of fake business listings in a variety of industries . </P>

The design and implementation of public bike information system based on google maps