Black border on left of SF goes to a strange URL, that doesn't load.

Is anyone else getting this? The black border on left of any SF page goes to strange URL
bit.ly/XDiR5z. Does anyone know what that is? It looks rather suspicious to me. Especially given that the .LY is the internet country domain for
Libya.
It doesn't load as you can see...

My PC is not infected or compromised. No other website are doing it. It's exactly the same when browsing SF with my Android smart-phone.