I thought also that it's just a matter of ID's and Keys that will be sent by email, until I saw that Malwarebytes have two other options for me to choose: 1. a Backup CD for $9.95: it "contains all the software that you purchase today. You always will have a Backup CD at hand in case it is necessary to re-download a product due to unfortunate events such as the need to reformat your hard drive or simply purchasing a new computer". 2. an Extended Download for $5.95: "If you ever buy a new computer or have to reinstall the software on a new installation, you can simply retrieve your software from our servers anytime over the next 24 months". The above led me to believe there's something more than just ID's and Keys. After all, if the program is the same for anyone then in the case I need to reformat the hard drive, I can just re-download from the web site and re-enter my ID and Key. The fact that the above 2 options exist tells me there's more to just ID's and Keys.