The other option is to rent a server using Spot Instances where we would utilize the resources only when capacity is most affordable, like in the middle of the night.

FORBES: Amazon's EC2...Almost As Promising As Cliff Lee

The FBI document says the information would be used to help it to predict the likely actions of "bad actors", detect instances of people deliberately misleading law enforcement officers and spot the vulnerabilities of suspect groups.

BBC: FBI plans social network map alert mash-up application