the most important part of this to US is that after a URL has been bookmarked, you have the option to write a journal about it, or submit it directly to the Slashdot authors for consideration as an article.
Also you can write a journal entry about it. Journal users will note a new function as well, a Submit to Slashdot function is now included in the Journal form. ticking that box will submit your story to the editors for consideration as a story.
Also bookmarks are taggable, so please try to tag them as best you can. We have a lot of stuff coming to this, but for now it's all in testing so please give feedback.