Dapper allows you to create a "black box" (a Dapp) for any data source on the Internet. The Dapp produces XML which you can use programatically in whatever way you like. Additionally, Dapper provides you with the ability to transform this XML into other formats (e.g.: HTML, Google Maps, RSS, more).
These details are provided for information only. No information here is legal advice and should not be used as such.