http://www.curate.im - content curation and discovery platform. It lets users create, share, and discover lists of links on whatever topic they want, to help people organise useful stuff and save people from having to trawl through search engine results for good links about stuff. Log in with the username 'test' and password 'test' to see the user dashboard etc :)
Thanks! I built it last summer and posted it on a couple of forums but it's basically dead. It would be awesome if more people would use it though, in terms of monetisation I think some sort of 'Sponsored Curations' thing could work quite well, where companies can create their own lists and have them appear in users' feeds.