Postanohttp://POSTANO.com - Offers many ways to share content such as RSS feeds, Facebook pages/profiles, Tweets as well as Google Alerts. You are also able to re-share posts to both Twitter and Facebook.
PAPER.LIhttp://PAPER.LI - Has a great clean and user friendly mobile website. It also has iPhone and Android Apps and allows you to add a Google+ account as a source.
NEWS360http://NEWS360.com - Has infinite scroll and uses a linear arrangement, which makes it easier to add items to it. Also offers a preview or blurb of the content.
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