The SmartyStreets Ruby SDK by Florian Lorrain allows developers to integrate the SmartyStreets APIs into their Ruby applications. So far, only the SmartyStreets US Street Address API has been implemented.
Last week Flickr announced a great set of enhancements to their service: geotagging of photos on a map. Once again they've done a nice job in the interface by making it really, really easy. Drag-n-drop them on the map and you're done.