* storing key links on the net vs. on a local computer - allows access from any machine at any time, e.g. the local library (old hat, Backflip did this too) * a fast and very effective way to keep track of stuff - this means you are not waiting for the Google spider to visit any longer. You can get a RSS ping as soon as a link is added. * examining tags per link, gives you a feel for how the rest of the world sees things vs. your private ontology. * using a 'secret' group tag allows group members to alert each other of key links - a pull rather than e-mail push mechanism. * applying 'flat' tags (single words) is far more flexible than operating within a hierarchy of folders (facetted classification). * monitoring 'new' links on the delicious 'front page' or 'popular' page gives a feel for breaking news.