I don't know how I missed it but Flickr finally added their own geotagging interface. It's built with Flash and based on Yahoo Maps (naturally), but it works pretty well. If you've already geotagged some of your photos, you can automatically add them to your map. Otherwise, you just drag them on, placing them wherever you took them. I think the coolest part is how it lumps together nearby photos at larger scales into larger and larger icons. Totally sweet. Check out everyone's photos, or, to really blow your mind, read up on some more of the details, including spatial updates to the Flickr API and tools for autogeotagging cell phone pics and automatically associating them with nearby events listed at Upcoming.org. Struggling . . . to comprehend . . . coolness!