Google has tweaked Gmail so that anyone who can find you on Google+ can send you an email, even if they don't have your email address. If you don't fancy being spammed by the wider Google+ community, there's a setting to switch the option off.
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If you haven't noticed, Google is making a serious play to make sure everyone signs up for and uses Google+. Whether it's to comment on YouTube, post photos, or even share a Google Map or driving directions with someone else, you need to go through Google+. Not all is lost, though! Let's look at where you can escape the clutches of Google+, and where you have no choice but to submit.
Google+ is the red-headed stepchild of social networking, but like any good parent, Google keeps plugging away. Along with the upgrades to the Google+ Android client we reported on earlier, Google has also opened up the Google+ API, which enables integration of Google+ with Google Apps environments and with other third-party apps.