I have been working on a project (https://aquila.network) to allow anybody to "maintain" and "share" searchable bookmarks. "Share" feature is very similar to what we see in Google Docs.
Value propositions for the users are:
#1 - access to powerful search, answer at the fingertip.
#2 - discover topics, like-minded people.
what are your thoughts?
Footnote: Sign ups are manual right now. I will try to give you access ASAP, once you fill up the form. Also, there are some example bookmarks available in the explore page as well.