Having spent the last couple years developing a bookmarking / archiving service which is somewhat similar to Kippt (as well as Historious and Pinboard + Archiving) I'd be interested in knowing what other tools you've found that provide a valuable core feature set?
Shameless self plug: The site is called http://preserve.io and if you're interested we'd love your feedback on our pre-beta which has now been actively used for over a year
Shameless self plug: The site is called http://preserve.io and if you're interested we'd love your feedback on our pre-beta which has now been actively used for over a year