Spam. How to fight it. Internet is flooded today with undesirable advertising letters also known as spam. Both for an ordinary user connecting to Internet via dialup and for various companies paying for the dedicated line or using DSL spam equals wasted megabytes of information. The megabytes, which are paid for. And time, wasted on viewing advertising offers of unnecessary things or services. Currently there are a lot of ways to guard your email box against unceasing attacks of “Viagra”, touri.