I found this resource and thought it was worth sharing.

Bookmark & Share will allow your visitors to add any page to their favorites or blog sites with one click. The link can be added to a custom island and will add the page you are viewing to the following bookmarking services:
  • Your Browser Favorites
  • Google Bookmarks
  • Del.icio.us
  • Digg
  • Facebook
  • Furl
  • StumbleUpon
  • Yahoo MyWeb
  • Newsvine
  • Reddit
  • Technorati
  • Live Bookmarks
  • Yahoo Bookmarks
  • Twitter
  • Ask
  • myAOL
  • Slashdot
  • Fark
  • Simpy
  • Propeller
  • RawSugar
  • Blogmarks
  • Spurl
  • LinkaGoGo
  • Mister Wong
  • Wink
  • Backflip
  • Magnolia
  • Diigo
  • Blue Dot
  • Segnalo
  • Netvouz
  • Tailrank
  • BlinkList
  • DropJack
  • Feed Me Links
Note: The code includes an image but it's easy enough to change this to text if you prefer.

http://www.addthis.com/