hasFeed :: (IConnection c) => c -> RSSFeed -> IO Bool
hasFeed _    (RSSFeed Nothing _ _ _ _) = return False
hasFeed :: (IConnection c) => c -> RSSFeed -> IO Bool
hasFeed _    (RSSFeed Nothing _ _ _ _) = return False
hasFeed _    (RSSFeed Nothing _ _ _ _) = return False