Botnets in the cloud: the new generation of spammers

I know this because they actually resell these accounts. Once you have purchased 10,000 of these verified Yahoo email accounts for 100 on Bulkaccounts.net, You will need another web robot to log on automatically on all these accounts, compose a message and then get it sent out - but it's easy to find a hacker working remotely overseas and paid via Paypal. I'm assuming that after a few hundred messages per account, these Yahoo accounts will be terminated, but in the meanwhile, they have offered the criminal a possibility to massively deliver his payload - typically spam messages with links to get your computer infected, turned into a bot, or get your personal info stolen.