This simple app uses the D-bus protocol to access Skype and then "extract" it into a menu for ease of access.
How can I install this Skype Status shell extension?
Open your Terminal and enter the below command.
git clone https://github.com/MrTheodor/gnome-shell-ext.git
mkdir -p ~/.local/share/gnome-shell/extensions
cp -r gnome-shell-ext/SkypeNotification@krajniak.info ~/.local/share/gnome-shell/extensions
This works in Fedora Core 15 but not sure if there are issue with your Gnome3 in a different distributions. And thank you Mr Teodor the cool, for this useful utility :).