Who said we need to look at them all?

As for information overload, I consider bookmarking a way to dribble information overload. Why? If you have tons of bookmarks together with tons of people's bookmarks being tagged, you can use those bookmarks to create meaning whenever needed.

If you consider Diigo for that matter, you could easily set up a group and you could have the bookmarks for your students to start with and encourage them to share their bookmarks with the group. Also, I'd consider specific tags

I think the comments feature and the sticky notes have great potential in the classroom!

Working with bookmarks to make a digital portfolio sounds very creative.

I thought the idea of a digital portfolio using tags a very interesting one, even more with the webslides. You can keep track of all the online artifacts you've been creating. Interesting for busy educators!

I think a really big thing is to change one's way of thinking.

First, add tags that are meaningful for you, for your private retrieval, and also tags that have been suggested by the group that will help others browse through the treasures you find online.

Handling more information and sharing it with our colleagues should make us better teachers.

Every online resource we explore is bookmarked and shared with the group. I used to do that in delicious. Now, I'll have to see how to do that here. In delicious I could easily organize my tags in Weeks (bundling tags). Here, I think you can use the "lists" to organize your tags in a meaningful way to the group. I'll check that.