Google has expanded their empire a little bit more with the introduction of Google Calendar.  The calendar is still in beta, but it’s early features show that it is quite a good system.  Sharing your Google Calendar is a snap, either as a public or group calendar, and adding on holidays, both religious and regional is just as simple.

The calendar can be configured to be integrated right into your Gmail account, for easy viewing of your events and upcoming holidays.

To test out the new Google Calendar system, find it here.

Yahoo Search Marketing has been testing a new Ad Model, code name ‘Project Panama’, that includes “ad relevance” components that are similar to Google’s.

The initial article reporting Yahoo’s new Search-Engine ad model appears in Forbes Magazine.

Yahoo hopes a new ad model will result in an overall greater click through rate and therefore greater revenues. It will be interesting to see what Google’s response will be in terms of potential patent infringement.