I'm putting together a presentation for my Meetup group, Internet Marketing of the Bay Area, and wanted to share this video, direct from Google, on what Google+ Circles are.

In essence, Google+ circles are a way for you to group people based on their relationship to you and one another and they allow you to share what you want with who you want.

You can have many circles, but there are 4 that come “out of the box” with Google+:

1. Friends
2. Family
3. Acquaintances
4. Following

When you write a post on Google+, you can choose who gets to see that post. You can select one or more of your circles. You can also choose the following:

1. Your circles – these are the aggregate of all of your circles.
2. Your extended circles – this is “your circles” PLUS their circles.
3. Public – anybody on the internet. These are searchable and may be found on Google Search.