Google+ lets you add people to Social Circles even if they're not on Google+. It delivers your posts via email. In a way, Google+ acts as a mailing list service, if you choose to use it that way. This is the feature that stands as the greatest threat to Facebook.
Everybody's on Facebook because everybody's on Facebook. In the past, if you wanted to do social networking, you had to get on Facebook because that's where your friends and family were. With Google+, it doesn't matter if people are on it. As long as they have an email address, they can be part of your Social Circles.
If you're one of the millions of people who don't like Facebook but stuck with it because there was no alternative, you're in luck. Now there's an alternative.
Google+ gives us freedom at last -- and independence from Facebook.
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