The Skype Online Status WordPress plugin allows you to add one or multiple, highly customizable and accessible (!) Skype buttons to your site. You can pick any of the available Skype button themes that will show your online status and place them in your pages and posts content(with a neat little Skype quicktag button in the WYSIWYG editor), in your sidebar viawidgets (unlimited number) or anywhere in your theme template files.
Please come back to read our extended review of this plugin. For now, have a look at the WordPress plugin page.