Interfaces For eliciting New User Preferences In Recommender Systems

This Paper explores the effects of letting the user participate in choosing the items that are used to develop the User Model.

Read more at:

http://www.grouplens.org/papers/pdf/mcnee-um2003.pdf

StumbleUpon Recommender Toolbar

I came upon this Recommender toolbar (StumbleUpon) which helps users to surf the internet and find websites, photos, videos and other content based on his/her interests.
StumbleUpon combines collaborative human opinions with machine learning of personal preference to create virtual communities of like-minded websurfers.

Read to find out more at:
http://www.stumbleupon.com/technology.html

Design Overview:
http://www.stumbleupon.com/stumbleupon_design.pdf