Thanks for the kind words. Looks like it just completed a batch, so the state it's at now is with most everyone on the site.
I just changed it so when you mouse over a node, it will hide all nodes that aren't directly connected to it. It makes things a little less busy. So if I want to see a group of the circlejerkers, that mostly revolve around ytknows, I can mouse over his name, and it's pretty clear to see that it's a well defined community that doesn't really include other big names from around the site.
I could definitely add a search feature. Or, could begin classifying the graph into clusters based on a number of different factors. Previously I did one for reddit subreddits, based on betweenness centrality. Either would make it more understandable, it's definitely a bit overwhelming at the moment.