Continued Community Migration tips:
The #InternetArchive, and the independent though closely-working #ArchiveTeam are a blessing if you want your content permanently archived online. (And if you don't, they'll disable public access on request, easily, email info@archive.org) This can be self-service or through an Archive Team Project, see: https://wiki.archiveteam.org/
To save any one page at the Wayback Machine, use a URL of the form https://web.archive.org/save/<ORIGINAL_URL>
. This can be scripted or automated if you have a list of URLs, say, from a downloaded archive. I've saved many thousands of my own pages across multiple sites this way.
There's also #ArchiveToday, which is not a charity, is pretty opaque about operations, operators, financing, and goals, but does do a good job of capturing today's Web as it exists (IA can have ... issues with this). There is also no automated bulk-save option. You can streamline the process by generating sets of URLs to save, and clicking through those one-by-one. Depending on what you're trying to save and how motivated you are, this is also an option (and yes, I've also saved a few thousand of my own pages this way).
Keep in mind that archive sites may not be as accessible or functional as the original. For example, Google+ URLs archived at the Internet Archive carry only a subset of comments, and profile pages don't allow the listed posts to be opened.
For example, this G+ post shows only 6 of 82 comments:
https://web.archive.org/web/20190319215226/https://plus.google.com/104092656004159577193/posts/hEjRbVQmYSD
And my G+ profile page shows posts but those cannot be opened through the Wayback Machine. Heck, you can't even determine the URLs to request archived copies:
https://web.archive.org/web/20190331094038/https://plus.google.com/104092656004159577193/posts/
What's most useful is if you can indicate on a profile / landing page where you've gone off to and people might be able to, with luck, track you down there. My G+ profile page above does so.
@jerry @evacide @micahflee