Now that the final demise of Google+ is imminent, how can I get all of my data out of there? I know I have stuff in there I didn't post anywhere else.
Will that also get the stuff I posted to various Communities?
You can download your Google+ content using Google Takeout.
If you want to download your Google+ data, you need to download your data from:
- Google+ Circles
- Google+ Communities
- Google+ Stream
Note: If you want to download Google+ Pages content, sign in to Google Takeout as the Google+ Page.
Takeout will provide a list of all the URLs of posts, and, for public g+ communities, the Create File from Web Page option in Adobe Acrobat will produce a pdf of all the posts. A workaround is needed for posts from a private google+ community. I don't (yet) know of one.