Engage.Social has a plugin that allows you to share online articles in a content stream to other users.
You will be able to add articles into a content stream that is viewable by other users to get them to share the article as well.
The plugin is available for both Chrome and Firefox.
Step 1: Install Plugin
Step 2: Go to website with article you want to curate and click on the Engage.Social Plugin
Step 3: Curate article into curation stream
Article curated will appear in curation stream that is viewable by all users,curators and admins of the curation stream.