One of the cool features of Flickr’s new geotagging service is the ability to do a date based filter on the area that you are focusing in on. For example, below is a map showing all of the photos in the NY area filtered on September 11, 2001. I was surprised to see that only 6 photos (as of today, 9/9/06) from that day have been geotagged on Flickr. See this map on Flickr.
Quite a few more photos have been added over the past couple of weeks (46 photos as of today), including a large number of photos from Flickr user *Hiro.