First things first.....if I tell you how to unfollow then you can't use it to unfollow me, mmkay?? You promise??? Alrighty, I believe you.
1) Go to the blog you wish to unfollow
2) Find the "follow widget" aka the thing with everybody's pics clustered together.
3) Make sure you are signed into the site. If there is a link that say "Join this site" - you aren't signed in and you need to do that.
4) After you sign in you should see your pic above the cluster of followers pics. Under your pic is a tab that says "Options" -- click on that. (see photo 1)
5) When you click the Options tab a menu will drop down. Click on "Site Settings" -- it will take you to another page where you can select to "Stop following this site" (see photo 2)
6) Voila!!! You have officially unfollowed that blog. Just remember you can do this with any blog you wish 'cept for mine. K? K!!