Google has a new feature that allows users the ability to leave annotations or notes within in analytics charts, helping to explain sudden spikes or drops in traffic.

Annotations allow analytic users to leave shared or private notes right on the over-time graph in an effort to let users bring intelligence to data.

The Annocation's feature will be available in January of 2010.

To learn more about this powerful new feature before it's official launch, access this YouTube video.

More about "Annotations":

From Google Blog: Holiday Bonus - More Great Features 

From TechCrunch: Google Analytics Gets An Upgrade With Annotations, New API And More

Best,

Denice MacDonald