HowTo: Remove Skype from Windows taskbar, keep as Taskbar tray icon
An annoying feature of Skype of recent Skype versions is that by default it shows an icon on the Windows taskbar apart from the one at the taskbar tray while you’re signed in. This also means it shows in the ALT+TAB key sequence when switching between open windows, which you might not always want to happen, since you may accidentally switch to it instead of the windows you’re working with at that moment.
If it (also) had an option “Keep Skype in the taskbar during a video conversation” it would be more useful I guess.
Luckily you can turn off that behaviour from Skype’s Tools/Options menu option, by going to Advanced and then Advanced settings part of it.