Ability to share bookmarks with one or more Friends (without needing a group)
One of the Delicious features I love is the ability to flag a bookmark to one or more friends. It would be great if diigo had similar functionality without needing to set up one or more groups.
andrea menon commented
this is the competitive advantage of more bookmarks, it isn't dev outright in evernote, it's some where google moved out last year (focusing on taggin). the way morebookmark works it's the simplest and could easily implemented giving special tags a different name (like read it later). differently you have to go for leaving followers from outside. this isn't a problem itself, but you have to consider intergroup relations when sharing and the frequency you need to share. this is why sharing by some special tags reveals handy. indeed intergoup relations made google sharing a nightmare soon.