A report on the mobile commerce by PayPal released this morning provides one insight into demand for the company's services.PayPal, citing a survey by Nielsen, said 51 per cent of those surveyed had used PayPal at least once to make a purchase for an item bought over the internet.According to Nielsen, consumers had used a credit card at least once for an online purchase, 25 per cent had used a debit card at least once and 24 per cent had paid by funds transfer at least once.There is no mention of the volume or value of PayPal's transactions in Australia, or whether consumers paid only once by PayPal and made no use of the service again.