Here are some ideas for your consideration (which I also proposed last time we discussed Collusion within Mozilla):

1) Audio support. At the moment it’s difficult to surf, and see the effect in Collusion, at the same time. If, when Collusion was open in a background tab, you got a “bloop” when a new tracker got added, and an increasingly higher-pitched “bloop” as an existing one got more and more connections, it would be easily to associate particular site loads and clicks with additional tracking, and lead people to a very useful sense that they were being watched everywhere (which they are).

2) Change the lines to have “data” flowing along them in the direction of tracking info flow. Change the size of the blobs to increase as the number of connections increases and, over a certain size, add an icon and make them pulse slightly. You’ll end up with this wonderful “slurp, slurp” picture of a big fat Doubleclick spider in the middle of her web, sucking in information.

3) Distinguish between over-time tracking and single loads, perhaps using black lines and grey lines. If I’m on a site and it loads an image from 3rd party site but there’s no cookie, that’s less tracking than if there is a cookie so they can detect if the same person comes back again.

Gerv