Again in the interests of people considering such an "adapter" lens for use on a compact camera.
The Opteka Vortex Fisheye appears to be the very same thing. At least in the specifications, design, wording and warranty. http://opteka.com/optvt58.aspx
These are also available in different thread sizes.
I personally don't care if they are the very same thing or not. I just wish to make people aware of their options.
N.B: Any personal attacks, or any mention of bias will see this thread vanish into the ether just like the previous "attempt".