Yahoo:
yahoo/word, y/word, y/es/palabra, y/fr/mot, ...
Wikipedia:
wikipedia/word, w/word, w/es/palabra, w/fr/mot, ...
Ebay:
ebay/word, ebay/es/palabra, ebay/fr/mot, ...
Others:
Technorati, Delicious, Digg, Amazon, NYTimes, BBC, Youtube, Flickr, Yahoo Maps, Google Maps, Google News, Wordreference, Mininova ...


Complete list, abbs and more info and feedback

This site adds to Google's home page a way to go to internal seekers. Source code.