Instead of spreading your favorites across different networks, use Favs to sync them to your Mac. Don't waste any more time on searching for your favorite content - Favs has a powerful search feature build right into the application that makes finding what you like a breeze.
Many favorites are public, for example on Twitter. This allows you to follow the favorites of persons you like and just see their hand-picked articles. For those sources Favs marks new entries as 'unread' and you can use Favs as a sophisticated Reader app.