You're potentially risking your life but certainly trading your reputation and taking on stress for not a particularly worthy amount of money. Plus then you're

You're potentially risking your life but certainly trading your reputation and taking on stress for not a particularly worthy amount of money. Plus then you're on the government's radar and they think you're money-motivated, not patriotism-motivated. Everyone involved in any cases brought with your help will think poorly of you. This might turn into cases brought against you. You will never get a government job. Your identity will probably be exposed as an informant at some point -- usually through public court records. If you actually are patriotism-motivated, go join the agency. There is no upside to informing on people.