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It's been a long time coming, but according to a message posted to the Google Voice Twitter account this morning, as well as a posting on the Google Blog, Google is getting ready to open up its free Google Voice service to more users. According to NBC's Janet Shamlian, who did a piece about Google Voice for the Today Show this morning, the service might actually open up for all U.S. users today - though as much as we would like this to be true, we think the reporter got this part of the story wrong. If you haven't done so already, however, now would be a good time to get your invite request in, as Google will first let in users who requested invites before opening up the service to everybody.

We have used Google Voice ever since it was still GrandCentral (Google acquired GrandCentral in July 2007) and couldn't be happier with the service, so here is our rundown of what you can expect once you get your own Google Voice number.