Google Integrates Voice Into Gmail
In a blog post Google announced that Gmail will now integrate support for VOIP, the service will continue to provide free calling to countries like the United States and Canada, calling rates for other countries will vary (U.K., France, Germany, China, Japan pay $0.02 a minute). 
However, Google Apps users and non-US users will have to wait longer.
Given that most of us don’t spend all day in front of our computers, we thought, “wouldn’t it be nice if you could call people directly on their phones?”
In order to be able to use the new service users will need to install the Voice and video plug-in before using it. The service is expected to become functional over the next few days. The most important aspect of this announcement is the convenient user experience, while raising questions on how much of your personal information Google now manages.