TnxRssReader (nuget): [4.5, RT8, WP8, WP81]  RssReader has a useful RssHelper module allowing you reading every standard RssFeed 2.0 or AtomPub in a simple way.  Supports async/await pattern.  Supports PRISM RDF Site Summary
Keywords: tnx|rss|feed|reader|async|prism|atom|pub|rdf