Tony writes: > 100M users * 1/30hr = 3.3M hours ; and that > happens every day. Each day contains 100M x 24 = 2400 M hours. 3.3 M hours is thus 1/8 of 1 percent. > I have to adjust my filters at least once a month > to keep the volume down. I just delete most of it by hand. It's easy enough to recognize. > There is also a tendancy to overlook the effects > of real scale. I see only speculation and exaggeration with respect to the cost of spam. It's very annoying, but it's not very expensive. > Clearly you have never heard of the devices designed > to block commercials ... I've heard of them, but they are not widely used. Nor is anyone complaining about advertising in magazines or newspapers, although often a large part of both is taken up by it.