This page contains links to things that I want to remember and share. Thats the difference. There are plenty of things that I want to remember, but 'sharing' them is  a different matter.  For example, I might want to remember a particular person that I went to school with, but I don't think it's necessary to share that persons expertise, unless it's relevant to what I'm doing. Or I might want to remember who made a particular widget, where their site is, what it does, and where there URL is.  I'd probably want to share that.