Found a new adware called TowerTilt while testing a free download.  This is how it will appear when it adds itself in Firefox:

Removing TowerTilt from Firefox and Internet Explorer with help from FreeFixer is pretty straightforward. Just check the TowerTiltBho.dll file and the Firefox extension in FreeFixer:

I haven’t tried it, but TowerTilt also has an uninstall entry in the Windows Control Panel:

Please let me know if this helped you remove TowerTilt by posting a comment. Do you know how you got TowerTilt on your computer?