I recently came across a situation where I needed access to both of my Skype accounts simultaneously. If you’ve ever tried to do this, you were likely greeted by the standard error message “You are already logged in to Skype on this computer”. My initial round of research indicated that nobody believed it to be possible. It was suggested that I set up a virtual machine and run the second instance in it, or build a chroot for a second instance; neither of which is an ideal solution by any means. A bit more digging revealed that there is a way to run multiple instances, and more than that, it’s actually built into Skype itself!