GooglePlus not showing in the widget area in SF5

Hi,
I am using SF 5. Although in the Settings - Social Sharing I have checked the Google+ option, 
it is not showing in the Content section of Widget area. Is there anything else to be done?

Thanks.

I'm using it, and it works ok.

The widget appears to reference a butt-load of script at a couple of places, accessing domain apis.google.com  -  so check that it's not being blocked.

I am not clear. Can you pls describe it.

Use Firefox+Firebug and inspect the HTML of the loaded page - specifically in the head section.