What it means...
Can anyone see all my web requests?
Yes - Should be No not if you use opportunistic TCP encryption such as TCP/Crypt.
Can anyone see my web requests if I use HTTPS?
No - Should be Yes if they've inserted there own Root CA.
If I use HTTPS, will anyone be able to access my details from the remote web server logs?
Yes - Should be No - Not if you've fudged there Geo-location and forged your Headers.
Can my DNS requests be logged?
Yes - Should be No, not if your using DNSMasq and an OpenDNS uses unencrypted UDP on port 53 so obviously you should encrypt your UDP as well as your TCP.
Can my ISP determine which of us at home is accessing a certain site?
No - Should read yes, if they're using immortal cookie technique!
If I connect to a website using a VPN, will my requests be logged?
Perhaps should read as Depends on who owns the VPN.
If I use a Tor browser, will my ISP be able to log my web requests?
No - Should again read Yes because of all of the above.
How can ISPs trace me?
A session cookie is used for each user’s web browsing session which can not always be harvested if you disable JavaScript and use a browser that refuses 'Cookies'
Will investigators have powers to examine web server logs?
Yes - Should read No, not every country is going to kiss your ass!
Could there be a “man in the middle”?
Perhaps - Should read Yes there can be which is why you need to take steps.
Will an investigator see my passwords?
No - Yes, they'll see them being typed in if you use Android or X11
So, who really knows what I access?
Good question!