I love ripping off good ideas from other people's blogs. I was reading Alvaro Graves-Fuenzalida's blog when I saw this nifty little force-directed graph: When zoomed in, it shows the relation between posts and tags. In this case, I can see that the posts about Small Gods and Pyramids both share the tags of Discworld, Fantasy, and Book Review. But only Small Gods has the tag of Religion. Isn't that cool! It is a native feature of Quartz's GraphView. How can I build something like that…