Like many people on Slashdot, I'm the person in my circle of family / friends who people approach regarding IT purchases. (For their kids, home office, etc.)
A week ago, I would have recommended against HP printers because of their antics around cartridges.
Reading today's story further entrenches that resolve. Indeed, HP has that much more reputation to mend before I consider their printers.
I've only ever used the manufacturer's cartridges for every inkjet & laser printer I've ever owned -- I did go generic for printer ribbons back in the dot matrix days -- so one would think I'd be indifferent regarding HP's behaviour. In fact, I find it offensive and overly-aggressive.