There are a wide range of free keyword tools available on the Internet. These tools can serve as a good introduction to keyword research. However, once you start doing keyword research on a regular basis and need to have access to more detailed information, you are going to want to have keyword software that allows you to do everything you need in one place. When you reach this point, it’s worth paying for a piece of keyword software. When you consider the amount of value you’ll receive from using quality keyword software, it’s easy to see why this is a wise purchase.