Hi call_me_quagmire,
These are most likely third party cookies from a website you frequently visit. You can safely block 3rd party cookies in your browser (recommended) which should not interfere with your use of your favorite websites.
See Recommended settings (with screen shots) in this article:
Blocking Unwanted Cookies with IE 6http://www.mvps.org/winhelp2002/cookies.htmSet first party cookies to *prompt* and depending on how you see them, you can also add certain cookies to either "always allow" or "always block". Set third party cookies to *block* (recommended)