Spammers send out hundreds of thousands of e-mails at a single mouse click.
Those messages eat up processing time through numerous Internet Service Providers and often bring down smaller systems and end up delaying or aborting legitimate mail altogether. Compounding the problem is the fact that most spammers forge their e-mail IDs, making it impossible for you to be taken off their lists. There is a law on the books that bans so-called junk faxes and it has worked like a charm. In all but a few isolated instances here and there, junk faxes dried up faster than a waterhole in the Sudan after the bill was passed. The motivation for that bill came when Congressional fax machines started getting bombarded by junk faxes.