This plugin is not available.
NP_GoogleImages fetches images from Google's image search and automatically includes a chosen result in your blog item. The image selector works similarly to the media selector and can be accessed from the item creation dialog. Selected images are cached locally upon the first request and can be deleted anytime. If they are not found on the next page request, they will be recreated.
The plugin stores the item-image-associations in an extra table. If you uninstall the plugin, this table is not deleted by default, so that in case you reinstall the plugin, you won't lose the images you associated with each item. However, code to delete the table is already present, simply uncomment the line in NP_GoogleImage::uninstall().
See http://www.tillgerken.de for details.
Current version (0.1) can be downloaded at http://www.tillgerken.de/files/nucleus/NP_GoogleImage.0.1.tar.gz
Update: Dead link!!!