That's great news, considering that I am an old time stumbler and have tons of pages on my profile.
"With the new application, you can add StumbleUpon to your Facebook page and share your favorite websites and videos on your profile. You can also see which websites and videos your friends have discovered by checking out the "What's New" section."
What is StumbleUpon?
StumbleUpon helps you discover and share great websites. As you click 
Stumble!, we deliver high-quality pages matched to your personal preferences. These pages have been explicitly recommended by your friends or one of 2,688,873 other websurfers with interests similar to you. Rating these sites you like (
) automatically shares them with like-minded people – and helps you discover great sites your friends recommend..............read more