Search engine firms are really just ad companies and they’ve always read our emails to determine which ads will get us to click more ads.
It’s simple data mining.
Acting like it’s an invasion of privacy is foolish. If Google didn’t read our mail then they’d have no way to effectively do their job as an ad company. Thus they wouldn’t invest money in the tech that we desire and use.
To be honest Google’s losing money for not maximizing their data mining efforts.
That’s #DataMining engagement to the next level.
My guess is that prior to ads being placed in G-Voice, we’ll see commercials before a Google #Hangout starts.