I like the idea of the federated wiki, but search engines rank copies of pages poorly, so it is not clear how visible copies would be after the original content disappears.

I used Evernote for years, but recently canceled the service because I spent too much time curating compared to reading old material.

One option that I am considering is archiving really good web content as web archive files and saving them locally in folders indicating the year of capture. Local file search would quickly find old stuff and if I stored the yearly web archive folders in Dropbox, I would have them available on different systems.