The news that Avogadro calculator has been found at several locations and is still free to download, whether you agree with the creator or not. While it may be true that you are allowed to take the application free of charge, it doesn't mean that you are permitted to use it for any purpose. A lot of people would like to take advantage of the free and easy to use application that you can download from the internet, but unfortunately they are doing something that isn't legal and violating the copyright laws. It's as simple as that.
The reason that this has happened is because of a simple reason. When someone distributes a piece of copyrighted work they are actually infringing on the copyright. The copyright law states that one who distributes a piece of copyrighted material must do so in a proper manner. If they distribute the piece in a way that violates the copyright laws, then they are breaking the law and have committed a crime. Therefore, if they download or use a piece of copyrighted material without obtaining the permission of the copyright holder, then they have broken the law and are violating the copyright laws themselves.
There is one very simple way to stop this from happening to you. You need to understand the difference between free and paid software, as most people that download Avogadro are downloading it for free. Downloading a piece of software for free is completely different than downloading a piece of software for free. If you download a piece of software for free you're violating the copyright laws. The only way to stop yourself from being a victim of this situation is to get the Avogadro application for free.