Microsoft offering $250,000 reward for Rustock Botnet's info

Microsoft is offering reward of $250,000 for providing identification, arrest and criminal conviction of the individual(s) responsible for controlling the Rustock bot net

This Rustock bot net  enslaves around 1 million computers and force them to generate billion of spam mails. It is able to send 30 billion spam mails every day. This bot net leads to other crimes such advertising unapproved