wixi, an exciting new media centric social media site, is inviting TechCrunch readers to its beta version. I'm glad I followed up on Arrington's advice today and took wixi for a testdrive. It's amazing. Wixi users get 3GB of free storage that they can use to share photos, videos, and music with their friends and family. While the service is browser-based, Wixi designed the interface to feel like a desktop environment with drag-n-drop functionality. wixi, launched at TechCrunch 40, and I apologize for not including them in my last post about the NYers who generated buzzz there.