The channel definition format (.CDF)
http://www.microsoft.com/standards/cdf-f.htm
includes a LOGTARGET feature that allows a web site provider to make
your browser deliver logs of your usage via an http post or put. Even hits
from cache are logged.
This is all not so good and getting worse. Not only is the information posted
material you wouldn't want to give to a provider it also being http post/put
normally is spoofable anyway.
Unanswered question for next time - or for folks with more time than me
to follow up
o Can you put other sites in your channel definition and get logs of
when they read your competitor site
Alan