Wisetamp is a module for the Firefox web browser allowing you to create custom signatures for your webmails.
In addition to your personal information, with WiseStamp you can customize your signature with:
Icons pointing to your social networking profiles (Facebook, Twitter, Linkedin, Flickr..etc).
Yyour nickname from popular messaging services (Gtalk, Skype..).
Direct link to the RSS feed of your site (reference of the last article published..etc).