Publishing using the hCard format allows search engines to identify your contact information on your web page.
Personal hCard module for Joomla shows:
AIM user ID
Yahoo user ID
MSN user ID
XMPP (Jabber) user ID
Skype user ID
ICQ user ID
Also the style as it is in picture not work
There are several ways you can validate that the module is working, for example,
1. Use the hCard Microformat Validator: http://hcard.geekhood.net/
2. Use the Google Structured Data Testing Tool: http://www.google.com/webmasters/tools/richsnippets
You can also find brief documentation on the download page (http://ficksworkshop.com/apps/81-personal-hcard)
The module uses minimal styling and so it inherits styling from your template.
If you have more questions, please contact me at http://ficksworkshop.com/contact. I'm happy to update documentation, etc for anything that is unclear.