You can comment on this site anonymously; however, to prevent, or at least reduce, spam, such posts require my approval before they will be visible. You can also register as an authenticated user, which will give you the ability to post comments without approval (same rules apply to forums). Registering requires a valid e-mail address (again, to fight spammers). E-mail addresses collected in this way are not used for any purpose other than validation of users and recovery of passwords, and are not displayed publicly.
Of course, anything you put in your comments becomes publicly viewable.
I've enabled tools (such as Google Analytics) to analyze traffic, to gather aggregate data to help people find the site through search engines. Such tools tend to work, in part, by placing cookies on client systems.
If you have any questions or concerns about this policy, please e-mail me. My contact info can be found on the About page.