If you haven’t, I suggest you start subscribing to this. Get’s you a mail a few times a week and I always find something very interesting here, like design trends, useful tools and much more.
How is it different from http://news.layervault.com?
No idea, never heard of http://news.layervault.com so I can’t give you an opinion on it
Another one I use is Panda. A Chrome extension that opens with every new tab.