A map mashup of teardowns in Westport. Ct. A teardown is when someone buys a perfectly fine house, or at least a fie house for the people who lived there usually for decades, and then razes it to put up a much larger house. The map links to entries about the houses. The entries have open comments. The mapping app is made by a company I've never heard of called MapTeam, they are getting their map from sources other than Yahoo or Google which, though rare today, is possible.