Option
If you would like a bookmarklet version instead, to use on a per-site basis, use the following code:javascript:window.open('http://www.bugmenot.com/view/'+window.location.host+'#content', 'bmpopup', 'width=500,height=400,menu=no');
About
While there used to be a number of BugMeNot tools, addons and bookmarklets on the web, after recently searching, I couldn't find any that still worked, which is why I wrote this script.
Usage
To use, when you are on a website and want to see if there are any BugMeNot accounts for it, you can go to the menu and press the 'Bugmenot Button'. This will open a small window, containing the usernames and passwords on the account page of the BugMeNot website, if it exists. From this popup you can copy/paste the user/pass to try if they work.
Bugmenot Tip
I've found the more recently an account has been created (you can see how long ago at the bottom of each name/password) the more likely it will work. Also, if you use BugMeNot a lot, take a moment and leave the appropriate 'Did this login work?' feedback on the site, it helps everyone.