ClipMarks
Instead of full URLs, Clipmarks lets users share just the best parts of webpages. Using their plugin, you can bundle together your favorite selections of content from a webpage. This includes text as well as pictures and video. Submissions are then “popped” by other members of the community, with the most popular at the top. Using the plugin, you can also submit your clips to your blog. Currently, the site’s two pane page layout gives me the feeling of looking at the net through a steamship porthole.