Macleans.ca: “According to one research study, 20 per cent of American cell users have received commercial messages on their phones…. in Europe and Asia, where cellphone spam has become a torrent clogging the systems. Japan’s largest wireless provider NTT DoCoMo, for one, stops an average of 960 million junk messages a day, a volume that represents 80 per cent of its traffic.”

I could not have said it better. So quoting verbatim from MacLeans.ca, a very respected Canadian publication.