I keep all my bookmarks in a Delicious account and I was shocked that around 40% of links I saved since 2013 are now gone. I managed to find few archived pages in archive.org but many of the pages I "saved" are gone forever and I can never refer to them again.
I now save every single page I find important or interesting on my local HDD and then move it to a backup disk later on.
I now save every single page I find important or interesting on my local HDD and then move it to a backup disk later on.