What is "mapjack"

MapJack is a map feature introduced in 2007 that is similar to Google Street View, but has less coverage than Google Street View. Its current headquarters is in Hong Kong, and is in the beta stages. The site currently provides these types of views of various locations in the United States, Thailand, Sweden and Canada. It was only the second to provide such views of an area outside the United States when Chiang Mai was introduced.