This plugin creates a widget which easily displays, without becoming cluttered, the social badge from the leading social media websites.
You do not need to! The code is automatically created, all you need is the name of you profile on each social media channel.
The width option sets the width, if possible, of the embedded social media channel information so that it appears at the correct width for you website. This should be set to the width of the widget in the sidebar.
Yes, just do not enter any information for that social media channel and that section will not show up.