The new GameTraders iPhone app does exactly what you'd expect from an app developer released by a games retailer: it gives you the latest deals delivered right to the app, and lets you create a wishlist of games you want to buy in the future. But it also lets you track your collection, including naming friends that you lend games to, along with shortcut buttons to contact them to get the game back.
The gaming deals are delivered to your phone via push notifications, and GameTraders promise that the deals are exclusive to those with the app. There's also the ability to mark games you own that you're ready to trade in for when there's a good deal.
It's a free download from the App Store.