bookmarking
This simultaneous cross-posting feature serves dual purposes:
Delicious sembla millor com a gestor de marcadors. Diigo podria ser utilitzat com a bloc de notes.
etiquetatge social
While allowing users to annotate without restriction can lead to meaningful knowledge discovery, it also invites profanity, chat conversations, spamming, and similar digital graffiti. While a personal or institutional philosophy of radical acceptance may seek to value and preserve all contributions, in most cases some oversight will be preferred. Allowing users themselves to perform this function typifies the Web 2.0 approach, either by allowing them to rate content on a scale of usefulness (however the rater defines it), or to flag inappropriate content, akin to the "Flag this answer" link in Figure 3. As Arko et al. (2006) report in DLESE, any feedback function necessitates regular human review, but the job of overseeing flag submissions allows librarians to see how the collection is being used, which can be a valuable source of naturalistic data.