Ebay Carbon Scrubber?

I just paid for

Activated Carbon Air Filter Cleaner Quiet Odor Scrubber - eBay (item 160229575437 end time May-12-08 21:52:07 PDT)

Anyone have any luck with one of these or one like it?

going to take a powerful fan to push the air through, but should work freakin great.

on an air filter wouldnt quieter just mean more restrictive to air flow. ie needing a cfm fan

It says it is 400 True cfm (with the carbon scrubber). Which would be plenty for the space im working with.