Interesting find, Thunder. I decided to grab one just to give it a whirl. For about $70 shipped, I might as well try it out.
I've seen a few postings from buyers that believed it cleaned up the SD broadcast, but I've also seen some professional reviews that gave it a somewhat "lukewarm" reception. But considering they (pro reviewers) were looking at it from a $500 scaler standpoint, if it didn't pass all their testing w/flying colors, I could understand their apprehension at recommending it. For the $70 price tag, I'd bet the reviews would be a bit more lenient.
I should get it sometime this coming Mon/Tues., so I'll give some feedback once I've had time to set it up and do some informal testing... -TD