“Why does Pornhub even have a share to Google+ button?” (joke)

Google+ is an interest-based social network that has been the subject of several jokes, such as this one, that was posted on Twitter by Theodore Kellington‏ on July 8, 2012:
 
“Why do they put the Google+ link when you’re watching porn? I don’t want anyone to know that I use Google+.”
 
Some versions of the joke specifically mention the adult website Pornhub. “PornHub has a share button for Google+. That’s stupid, I don’t want anyone to know I’m using Google+” was posted on Twitter on APril 24, 2014.
 
     
Wikipedia: Google+
Google+ (pronounced and sometimes written as Google Plus) is an interest-based social network that is owned and operated by Google.
 
The service, Google’s fourth foray into social networking, experienced strong growth in its initial years, although usage statistics have varied, depending on how the service is defined. Three Google executives have overseen the service, which has undergone substantial changes leading to a redesign in November 2015.
   
Twitter
Theodore Kellington‏
@_Teekaye
why do they put the Google+ link when you’re watching porn? I don’t want anyone to know that I use Google+
5:10 PM - 8 Jul 2012
 
Twitter
Colin Evans‏
@colin12269
Why do porn sites have a share on Google+ link? Do they really think anyone will use that? I don’t want anyone to know I’m on Google+!!!
10:59 AM - 22 Oct 2012
 
Twitter
OJ Pimpson‏
@thacerealkillah
Why do most porn sites have a share to Google+ option now? I don’t want anyone to know I have a fuckin G+ account
6:08 PM - 27 Oct 2012
 
Twitter
pauldankel‏
@PaulDankel
I hate that porn sites have a Google+ sharing option. I don’t want anyone to know I use Google+.
1:19 PM - 18 Nov 2012
 
Twitter
Cakalusa‏
@cakalusa
PornHub has a share button for Google+. That’s stupid, I don’t want anyone to know I’m using Google+.
4:27 PM - 24 Apr 2014
 
Twitter
Who was that?‏
@PeterMuttley
PornHub has a sharing feature via Google+....
Fuck that, I don’t want anyone to know I’m using Google+
10:27 AM - 24 Sep 2016
 
Twitter
Mother Of Sarcasm‏
@SarcasmMother
I hate when porn sites give you the option to share with Google+
I don’t want anyone to know I use Google+
2:35 AM - 1 Oct 2016
 
Reddit—Jokes
Why does pornhub even have a share to google+ button..?
submitted March 14, 2017 by SpookyItalianDish
I don’t want anyone to know I have a google+ account…
 
Twitter
Mr. Drinks On Me‏
@Mr_DrinksOnMe
Why does PornHub even have a share to Google+ button? I don’t want anyone to know I have a Google+ account.
2:28 AM - 14 Mar 2017