App Social: The Social App Store Preloaded on +50m Windows Phone Smartphones

Think of Instagram / Spotify concept applied to the app store

So Get your profile, build your list of apps, follow and be followed!

https://www.blogcdn.com/www.engadget.com/media/2013/08/nokia-app-social-beta.jpg

Built by a great team of developers and designers

It got eventually killed by Microsoft after their acquisition :)