The following tracking cookies are ones I've blocked for several months without any apparent loss of functionality on the sites where they're used.
Most of them were flagged as tracking cookie threats by Lavasoft or Trend Micro Internet Security or both, except for a couple that I added to the list for other reasons.
Color legend:
* Black = No additional comment.
* Blue = Website might not work properly if you are a member and block its cookies.
* Red = Cookie seems difficult to block, and keeps coming back.
To create your own cookie block list in Internet Explorer or Firefox, enter each of these as shown here: