We have tried to take on the social bookmaking world with out site www.favilous.com - we will take on board all these comments. Some people have said they want to read links later; you can do this using our site. We also introducing a Yammer type service for networks of people to bookmark and share their bookmarks and documents with each other on their network. Thanks for the comments-really helps.
I pay for instapaper and I pay for pinboard. I like viewing stuff later at my conveniance and I just want to bookmark, easily, and not focus on the social side but then I may be in the minority.