Terror-free investing is a way to make sure that your money is not going to be used to help fund any organizations or people that do bad things in the world. When you use terror-free investing, you make sure that your money is only going to companies that aren't involved in activities you don't agree with, like making weapons or supporting terrorist groups. So instead of investing in any company, you pick ones that you feel good about that aren't involved in activities you don't approve of.