Why is Google trying to let people in my computer?

[Daisy]

I just received this email in my Yahoo mail....
-- Michael Friedberg added you on Google+

What?? How can I get rid of this new angle they're promoting? It is very intrusive and beyond the rules of privacy.

I sent the mail back to Google and my message was....
-- GET THIS CRAP OFF MY COMPUTER!!!

[Jeff P]

You can just delete your Google Plus profile.

[Wings]

I really don't think anyone is being permitted in your computer. If you don't want that name...block it.
If you block the name, the person can't contact you. Very likely it's spam that you got.

[Nik]

Google + is just a social account like Twitter. They are not allowing people into your computer basically its the equivalent to a Facebook request. You must have create a Google + account simply log in and delete it.