According to a study by the US , 9 out of 10 ie is a stupendous 90% of e-mails flowing in te US are spams. In the US the spam increased from 2.5 billion in June to 7 billion in November. Spam costs a $1000 per employee per year in lost productivity. So far so good. This e-mails are sent by gangs of theives who are phishing for credit card numbers through spam e-mails. They also market products like Viagra, Financial producst and advice etc.
They achive this through controlling user computers, which are called Zombie Network. The large computing power is used by these theives to defraud users of Biooions of dollars every year.
Happy Mail Checking.