In the last few years, the words "apps" and "operating system" have pretty much become household terms that many of us use on a daily basis. As the popularity of smartphones has increased, some confusion has set in for BlackBerry users on both of these fronts. Some have wondered why an OS is available from a certain carrier but not from another (for example, when two people own the same exact phone but are given two different OSes by two different carriers). Along the same lines, with the explosion of iOS and its App Store, and Android and its Market Place there has been some confusion as to why certain apps are available for some OSes but not others. This encompasses a phenomenon I like to call "Blame RIM."