How to remove Skype phone number auto-formatting

The skype image is something that is configured by your browser (Firefox & IE usually does this). When the browser sees any phone number it automatically adds a CSS style value to create a default logo style for the phone number. You can remedy this by doing a couple of things.

1) install a plugin that removes autoformatting:
http://wordpress.org/extend/plugins/ps-disable-auto-formatting/

2) follow the instructions in this excellent guide:
http://bacsoftwareconsulting.com/blog/index.php/web-development/prevent-skype-from-highlighting-phone-numbers/