Google has just implemented a change to Google+ and Gmail that will enable you to email other Google+ users without having to know their email address. If you want to send an email to somone on Google+, but do not know their email address, simply type their name in the ‘To’ field in Gmail, and they’ll appear as one of your Google+ Connections. Google insists that Google+ contacts can’t see your email address until you send them an email.

This sounds very suspicious and the next step to Google+ replacing every Google product.

Update – if you log on to Gmail on your PC , go to settings you can turn this feature off.