If you are curious about being PCI compliant and what it means to you then stop by and take a look at the new PCI DSS Center. Here you will find resources that will help you understand what it all means. There is a link directly to the PCI SSC website (these guys wrote the book on being compliant, literally) along with a glossary for all those terms you may have heard tossed around but didn't know what they were. There are many other resources as well. So look around at the material and find out why this is important to you.