Google just announced on the official Gmail blog  that its free Gmail voice calling service will be extended through 2013 in the U.S. and Canada. When the service first debuted in 2010, Google made it free for the first year. However since then, Google keeps extending it every year making it free for all U.S. and Canada users.

"Many of you call phones from Gmail to easily connect with friends and family. If you're in the US and Canada, you'll continue to be able to make free domestic calls through 2013. Plus, in most countries, you can still call the rest of the world from Gmail at insanely low rates," said Google.

You can also make calls that are not within your domestic region using Google Voice, but it will not be free. Depending on where you want to call, the rates are quite affordable. The question is will Google ever change this policy and starts charging it or maybe extends free calls to other countries? Only time will tell, but for now free is free and why to complain.