This guy openly states that he's using GMail, and assumes that because he doesn't get much spam that everyone else won't either.<p>I've worked with proprietary products like Barracudas, and similar open source systems like MailScanner, and none of them have been as good at stopping spam and allowing legitimate messages as GMail.<p>So extrapolating out his sample size of one to the entire internet is a bit of a stretch.<p>Further, he assumes that people running these scanners are doing regex type stuff to get these variations, when it's more likely that 99% of e-mail harvesters won't bother.<p>Spending the time to get those few amount of e-mails would not be worth the time, not to mention, the people that try to obscure their e-mail are probably the least likely people to buy viagra from some unsolicited e-mail.