Well that sure in not the one for techguy password.
Look at the cookie manager and highlight each.
I use
CookieSafe that is great to make temp cookies or to get session only from sites that you don't want to keep the cookies.
Then
CookieCuller that I love even more.
CookieCuller I have the icon added to the toolbar and use it all the time to clear unprotected cookies. You mark the cookies you want to keep. But even for sites like TSG that you have rights to set a cookie and you want TSG cookies do not mark protect on the session cookies. Your have to highlight cookies from each site you want to keep the cookies from and your see if it is a session cookie or not.
Once you get this set up you can click the "remove all cookies" button and it removes all UN-Protected cookies.
I use this after going to sites that set a cookie so am always clearing any tracking that can go on.
I have only these cookies from here and your see the "bbsessionhash" with a no to the left because it is not protected because it is just a session cookie.
The others are needed and the highlighted one is your password. "bbuserid" I think is the one that knows the user name etc.
Then your see only one from "forums.techguy.org" called "vbulletin_collapse". This I have but is not needed either. Well it only remember if you collapse any parts of the forum. Like the mail page you can hide or collapse parts by click the

on the right or other pages and the "Quick Reply" box.
You can also put the ads.techguy.org on the block list so it never gets set again. Just go to the cookie manager exceptions list and add it there and mark it as block.
You can also block a lot more cookies then you think you can but you had better backup your cookies with
MozBackup because in the exceptions list a site does not show all the cookies from a site.
So if you marked some as block from a site and blocked one you need then you have to unblock all from that site and start over.
It can be hard to do at some sites that have a ton of cookies and I bet I could block even more at hotmail but I bet I block 25 or so added cookies that are not needed to get to the hotmail email. Bet yahoo is the same way but I don't use yahoo but know they do have lots of cookies and change things around alot because of things I block by my hosts file and adblock plus. You can have it so your blocking all you can at there site and still get there but every some many months they change how things are linked so you have to redo it.
But get the MozBackup and the CookieCuller and get control of the added cookies so your only get cookies you need. Then clear the unprotected ones before going to another sites to kill the tracking.
Like here I bet all your really need are "bbuserid" and "bbpassword"
bblastvisit to know when you was here last.
bblastactivity to know where you was at I think. Like knows what treads you seen and what are new threads and post.