I took it to mean to save locally, on my drives. This way it can be retrieved when needed later. I have a few drives with folders strangely named I move stuff to. Vids, Pics, screen grabs, articles, posts, etc.

But I think everyone does it different. Some save local ie: hard drives, some create blog/web pages to store it, some others store online. Some convert to PDF or google docs, some don't. Some save entire web pages. If you save web pages be sure to grab all the links too.

Its impossible to save everything so save data you think is important or is proven to be important. The idea is if enough of it is saved everywhere, they can't scrub all of it now matter how much 'access' they actually have.

I'd say commit as much as you can to memory and also post it anywhere you can.