SYDNEY, Australia (AP) - An Australian man under investigation for illegal spamming sent more than 2 billion e-mails promoting Viagra in a year, an official said Wednesday. Experts say that's a drop in the ocean compared to the number of spam e-mails sent globally each year, and the system he used probably wasn't very sophisticated. The Australian Communications and Media Authority began investigating the man, whose identity was not immediately released, after receiving a tip-off from authorities in the Netherlands in May last year. Danyel Molenaar, a project manager for the Dutch Independent Regulator of Post and Telecommunications, said the...