um. If you care about anonymity, you can disable most of that in the browser. I recommend Firefox for the best nuanced control of these parameters.

There's a good guide here:
http://advocacy.globalvoicesonline.org/projects/guide/

yrs,
Shava Nerad
former Tor staff, current volunteer

Actually, if you look at how Tor works, the links are encrypted and tunneled together such that it is nearly impossible to trace a well formed route -- of course, assuming flash or a torrent client aren't giving up your IP within the data packets before it enters or after it exits the cloud.

You should think about learning more about how Tor works at http://torproject.org -- it's a lot more than a simple 3-hop proxy.

yrs,
Shava Nerad
former Tor staff, current volunteer

Sorry, didn't log in on the above comment -- but I'm not really anonymous or cowardly, just slack...:)

Shava