I'd like to show someone a specific point on Google Maps. How can I put down a pin (and remove all other pins) and get a URL of the resulting map?
Here is a page which illustrates sharing a location on Google Maps: A Guide To Sharing or Linking to a Google Map ( Yes, you read it right! ).
To remove all the pins(placemarker's to be specific) you could hover over photos and uncheck 'Labels' in the dropdown list.