The watchdog appears to question whether it is possible to have an exam which can provide reliable datafor league tables and which at the same time is capable of being taken and passed by teenagers of all abilities.
But he noted that for the first time this year that when compiling datafor supply and demand tables, his firm is adding a new category: diamond recycling.
Blogging pioneer Doc Searls has long argued that customers should shield their data and charge a price for it, turning the tables on marketing giants and their data-gathering web-crawlers.