I have found some articles (http://mikepultz.com/2011/03/accessing-google-speech-api-chrome-11/) describing how to use the Google speech API.
However, is this reliab
My understanding is that Google's speech web services are only legitimately used by their Chrome browser or Android operating system. You can certainly build a production Chrome or Android app that relies on these services. Both Chrome and Android documentation describe how to add speech features to applications. (Good links include http://chrome.blogspot.com/2011/04/everybodys-talking-and-translating-with.html and http://android-developers.blogspot.com/2010/03/speech-input-api-for-android.html)
However, notice the article you reference the author had to dig through the Chrome source code to reverse engineer the network speech APIs. Google has not published the direct network APIs for use by other clients (non-Chrome, non-Android). I don't believe Google intends for developers to build directly to their non-published network APIs. I would not rely on those APIs for a production application because Google could easily throttle or shut off access for unauthorized clients.