I have been using the social bookmarking tool, DIIGO, for several years. I rely a lot on this site and am constantly adding to my account. Here is my personal modus operandi with DIIGO:
1. As I skim through the items in my Google Reader or my Twitter account, I open the ones that interest me.
2. If I think an item I've read may be of use to me in the future, I click on the DIIGO button in my toolbar and choose bookmark.
I do the same after following a link to another article or YouTube video.
3. Then if the title of an item is self-explanatory such as 12 Crucial Questions to Ask before Using iPad with your Students, I just add it to my account. If the title isn't sufficient, I add a note in the space available when I click Bookmark.
4. Then I perform the most important step which is to give the entry multiple tags (labels). For example, for Education 2020, I used connectivism , gamification, project-based learning, and Inquirybased learning.
5. Once in a while if I have found something that relates to health or family that I don't want to share with the public, I click the small box labeled Private, so that only I can see it.
When I am planning a new mod for my course or updating an existing one, I rely heavily on my DIIGO account to find information that I have put there. For example, I recently created a mod on gamification. I had been collecting articles about gaming for quite some time, so I looked at all the DIIGO entries that I had tagged game, games, gamification, and gaming to find pertinent material. This review also allowed me to delete or edit material that I deemed less useful.
Another way I use DIIGO is to include a link to a specific tag in my DIIGO account in my syllabus. For example, instead of telling the students to search all of cyberspace for pertinent articles on microblogging for education, I simply ask them to choose some articles from my DIIGO account with Twitter tags.
I honestly couldn't function with DIIGO!