WiseStamp- Email Signatures

WiseStamp is a Firefox extension that empowers your email signature on any popular webmail service platforms (Gmail ,Yahoo Mail ,AOL, Hotmail, Google App.)Easily customize, Include IM & Social profiles, Automatically share your Blog posts, Quotes, News, Bookmarks and more. You can also separate preset signatures for your personal and business email interactions.
With WiseStamp you can:

• Customize your signature - Design style, Font, Size, Color, images etc.

• Add Rss feeds - Automatically Share blog posts, bookmarks, videos, daily quotes and many more.

• Easily add your social services – IM Services, LinkedIn, Facebook, Flickr and many more..

• Use multiple signatures - Create business & personal signatures to insert in your emails.

Wisestamp Supports:

• AOL Mail.
• Hotmail.
• Yahoo.
• Gmail.

Just surf here and follow the  instructions to set it up and go 
http://www.wisestamp.com/