There are too many social networks. Feedient aims to make keeping up with them easier by adding all of your feeds to a single page so you can see everything that's going on at once.
The service echoes TweetDeck's familiar multi-column layout, but it includes Twitter, Facebook, Instagram and YouTube. You can also log in to multiple accounts on each social network. Unfortunately, it doesn't seem to offer support for lists or reply columns just yet, but it's a great start as a top-down look at all the social networking sites you frequent.