Josef Průša is no longer a fan of PayPal. The founder of Prusa 3D Printers posted a recent blog entry describing how the company suddenly found that over $1 million had been frozen by the payment service, as part of a safeguard that PayPal has in place to prevent consumers from giving money to fraudulent companies. Prusa, however, cannot seem to convince PayPal that they are a legitimate company. Read more at