Jack Wallen / Elyse Betters Picaro / ZDNET Follow ZDNET: Add us as a preferred source on Google. ZDNET key takeaways Virtual Desktops are a great way to improve efficiency. Every desktop OS has the feature built in. These tips help me use VDs with a high level of effectiveness. When I first started using Linux in the late 90s, one of the features that I found so helpful was called Virtual Desktops (sometimes called "Workspaces"). Yep, that's right, Linux had them first, and the open-source OS has retained the feature ever since. Even better, the other two operating systems (MacOS and Windows) eventually realized how helpful the feature was and decided to implement it. Eventually, even ChromeOS picked up on virtual desktops . Also:  My 5 favorite open source operating systems that aren't Linux To some, Virtual Desktops are a must-use. To others, they are something to try and eventually forget. Finally, there are others who simply don't bother.…