NTRO is the mothership...PPTO just has % interest...NTRO is calling all the shots and the pps should be higher than PPTO's...it will PPTO just has a newsletter pump on...its a legit business and NO SCAM..but NTRO is the better value here at .017...if a buyout or merger takes place...IMO NTRO has all the cards...read the filings...its pretty clear.