The more I dig into this the more mind boggling I find the decision to sunset G+

- What happens to all those buttons, badges, embedded posts and signins for G+ on other websites?
- How do you extract and archive content from within communities?
- We now need APIs to extract and archive non-public data.

And so on.

Pretty much everything here is going to sunset as well.
https://developers.google.com/+/web/