Could this be used for Google Talk? (Score 1)

Just wondering - Is this a way for them to get into the audio advert market, but for google talk? I could easily see them releasing a 'professional' version of the GT service (no ads), as well as a 'free' version which has contextual radio ads every minute for 10 seconds? Surely the technology behind adwords would work here with some speech recognition software converting the previous minute's conversation into words, and matching them against the keywords associated with the radio ads.. Naturally all the speech2text data could be added to the google brain as part of their AI effort..