Along with unlimited storage, the new Google Photos organizes your photos using Google wizardry into personalized categories. I just downloaded the app myself, and it's awesome. All of my pictures, which had just been dumped on various devices, together and sorted. It's like a wonderful digital scrapbooking fairy godmother. The good folks at Gizmodo put together a pretty good beginner's walkthrough for desktop use here, if you need a hand to get started. Download the app here and never worry if you have enough room for your pictures ever again.