I discovered a great FREE application that places surf conditions on your website. This would be used mostly for coastal weather websites. The application generates a Flash object that displays on the user's page. the display includes wave heights, swell, water temp, tides, and more. Simple cut-n-paste installation. The display also includes a small ad at the bottom of the object window.
Data is selectable from world-wide locations and is not limited to the US coast.
For an example, have a look at
www.topsailweather.com/index.php. The example is shown below the forecast.
Pick this up at
www.wavewatch.com