Is there a Safari Extension for adding Mail-style Data Detectors to Web Pages? I love the Data Detectors in Apple Mail. Open a message that has a date or time in the content, and creating a new Calendar event is a snap. But this feature is not in Safari, so I'm wondering if there is a way to get it in there? An extension perhaps?
There is the HTML &lt;address&gt;-Tag and hCard, which are supported by Safari and are used for semantic data. Unfortunately, there is no data detector in Safari for those standards.

There is a workaround, until those detectors are implemented, by using "Mail Contents of This Page" from the File menu.