This animated visualizer lets you enter a word (in the little search box on the bottom left) and then shows the word situated next to other words that are used with similar frequency in English. It's cool -- you can discover some interesting things. Read the about page for more on that. This system would be really good if it used the concepts from my paper on A Physics of Ideas. What they should do is show the words next to other words with similar present momentum. That would be much more informative and useful than simply visualizing words as if all mentions happened at once. The fact that mentions occur over time (and space) is what is really important. It is much more interesting than the mere total number of mentions since time began. I would love to see a visualization of meme momentums as I have proposed in my article above. If you feel like making one, please let me know!