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Corrected it for you
They started forcing it on everybody with any sort of Google account, the minute they realised it had failed. They copied someone else's idea again, and the result speaks for it itself.
It is very popular with the people who consider themselves very important though, and who need to have a video conference feature that they never use and don't really need.
So ****ing annoying. Youtube, gmail, plan old searching, google [-]talk[/-] hangout. I hate it.