I know they used 1-800-goog-411 [0], their discontinued free call directory service to train their speech recognition, which was a pretty great idea. [0] https

I know they used 1-800-goog-411 [0], their discontinued free call directory service to train their speech recognition, which was a pretty great idea. [0] https://en.wikipedia.org/wiki/GOOG-411 https://en.wikipedia.org/wiki/GOOG-411