Stumbling?

[vishnu_dunty]

HEY hi..

in npincentives wat does stumbling means.. i find it very confusing. can anyone help me please

 

[weblord]

http://www.stumbleupon.com/about.html

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 2,081,497 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.