Well, the discussion stayed a bit lighter than I expected; however, I find the Safari comments interesting as I'll definitely be exiting the microsoft world over the next few years due to win vista.
Points I consider worth pondering include the availability of tools to allocate spyware resources according to software usage, installed plugins, security tools, etc. Also the financial and other motivators for building and mining databases of internet users.
I also saw no mention here of anyone looking into the Ferret pages. Very interesting stuff there, including:
"Wifi Packets
Probe Requests
http://www.theta44.org/software/karma.README
http://www.nmrc.org/pub/advise/20060114.txt
When a wifi enabled laptop starts up it will look for a list ok “known networks” or networks it has connected to before.
This list can be used to determine where the laptop has been used.
DHCP ++
You can offer up an address and pretend to be what ever server you are looking for.
Look at the Karma project.
Respond to WiFi “probe”
Respond with DHCP address
Respond to ARPs
Respond to NetBIOS queries
Respond to SMB/DCE-RPC connections
Respond to DNS queries
Respond to SMTP connections"
It's not just about "testing" your browser.