Ryan Pitylak, 24, one of the world's most notorious spammers and a recent University of Texas graduate, has admitted sending 25 million e-mails every day at the height of his spamming operation in 2004. At one time, Pitylak was listed as the fourth-worst spammer in the world.
How he earned using spamming:
Pitylak's e-mails touted low-cost mortgages, extended auto warranties and debt-counseling services, among other offers, and he received $3 to $7 for every lead he generated when someone clicked on the links in his messages.
Turning a new leaf
Pitylak says he now opposes spam and is offering his skills to Internet companies to help them fight spam.