Let's start with some different choices:
Brandwatchhttps://www.brandwatch.com/blog/
Lifewire
https://www.lifewire.com/best-bookmarking-tools-for-the-web-3486309
Updated March 04, 2018
https://www.lifewire.com/what-is-social-bookmarking-3486501
See this direct links from the website Lifewire (see above link for 2 articles on Social Bookmarking)
Updated January 31, 2018
A few popular social bookmarking tools include:
I signed up for Instapaper to save multiple articles and website I am interested in keeping for future reference. I also use Evernote at my job to collaborate training materials and information on projects. I really liked the clean format of Instapaper. It allows me to not have multiple tabs open and no more emailing links to myself to only search for later when needed. I think this will be very helpful to refresh my memory of great articles when creating new Instructional Design projects in the future.