Found another variant of the WebCake adware called Albrechto. As usual it is bundled with free downloads.
If you have Albrechto on your machine, you will see an extension listed in Mozilla Firefox and AlbrechtoBHO.dll loaded into Internet Explorer.
Albrechto can be uninstalled from the Add/Remove programs dialog.
You can also remove Albrechto with FreeFixer. Here’s a video tutorial: