Memonic allows you to capture, store, use and share online information. It “is a way to keep the essential information you come across every day and easily retrieve it again the moment you need it.”

They state:

A problem facing the regular Internet user today is how to keep track of information and bits of information found on the Internet. Current solutions such as (social) bookmarks do provide only partial and unsatisfactory solutions. Example: The bookmarked URL is no longer valid.

and,

In brief it’s a description of a system likened to a Rolodex of the Internet: Smallish cards holding bits and pieces of information for later use. Information becomes truly fluid.