Even though Skype for Linux is unlike most applications available on any Linux installation, that is, it is a proprietary application, it has long been a popular chat and VoIP application for many users, not for free software purists, but for those that do not care about the core philosophies of free software.
If you belong to that group, that is, if any of the core principles of free software does not come into play in your decision to use or not use a software, the latest news about Skype should make you think twice about using it.