Gigaom - Mark Zuckerberg announced the Skype-Facebook collaboration yesterday and showed off a great product built by the Skype team. As he talked about the world, he amplified his long held belief that people love to share and sharing on Facebook will only keep growing. He’s held that belief for a long time and talked about it first in 2008. Yesterday, he equated what is being dubbed as Zuckerberg’s Law to Moore’s Law. It makes perfect marketing sense that he would do that.