MovieLens thanks you for volunteering --- More information inside

[http://www.katz.pitt.edu/~xiawang]

Dear Robert,

Thank you for agreeing to help us with our study. We will call you at
our Hayward phone number between 6-10pm Pacific time on Monday, December 8th.

This email has two word attachments, please save them on your hard drive or
print them out and have them handy at the time we call. We wish to capture
your initial reaction to the content of the attached documents, so please do
not read them before we call you.

Thanks again for helping our project, we appreciate it very much.

Regards,

The MovieLens Research Team

---Executing: antiword

Email body:

***************************************************************

Hello MovieLens Member!

MovieLens is conducting a campaign to increase movie ratings over the
following week. We are contacting you because you have been a valuable user of
MovieLens. [uniqueness manipulation]

(list names of three movies, depending on uniqueness manipulation)

[benefits manipulation].

Please rate more movies today, at http://www.movielens.org.

Thank you for being a part of the MovieLens community!

_______________________________________________________________________________


*MovieLens is a research site at the University of Minnesota, and this rating
campaign is part of a joint research project between the University of
Minnesota and Carnegie Mellon University. If you have any questions about this
campaign, please contact http://www.movielens.org/~ratingscampaign.

***************************************************************

Manipulation Messages:

Unique manipulation

      Unique:

      In the past, you have rated movies that few others have rated, such as:

      Not unique:

      In the past, you have rated movies that many others also rated, such as:

Benefit manipulation

      Benefit to you

      Rating more movies helps you!  The more ratings you provide, the easier
      it is for MovieLens to identify people with similar taste to yours, and
      thus make accurate recommendations for you.

      Benefit to others

      Rating more movies helps the MovieLens community!  The more ratings you
      provide, the more information we have about each movie and the easier it
      is to make accurate recommendations for other people.

      Benefit to both --- you then others

      Rating more movies helps you and the MovieLens community! The more
      ratings you provide, the easier it is for us to identify people with
      similar taste to yours, and thus make accurate recommendations for you.
      Also, the more ratings you provide, the more information we have about
      each movie and the easier it is to make accurate recommendations for
      other people.

      Benefit to both --- others then you

      Rating more movies helps the MovieLens community and you! The more
      ratings you provide, the more information we have about each movie and
      the easier it is to make accurate recommendations for other people.
      Also, the more ratings you provide, the easier it is for us to identify
      people with similar taste to yours, and thus make accurate
      recommendations for you.

      No Benefit

(blank)

---Executing: antiword

Hello MovieLens Member!

MovieLens is conducting a campaign to increase movie ratings over the
following week. We are contacting you because you have been a valuable user of
MovieLens. In the past, you have rated movies that few others have rated, such
as:

(names of three movies)

Rating more movies helps you!  The more ratings you provide, the easier it is
for MovieLens to identify people with similar taste to yours, and thus make
accurate recommendations for you.

Please rate more movies today, at http://www.movielens.org.

Thank you for being a part of the MovieLens community!

_______________________________________________________________________________


*MovieLens is a research site at the University of Minnesota, and this rating
campaign is part of a joint research project between the University of
Minnesota and Carnegie Mellon University. If you have any questions about this
campaign, please contact http://www.movielens.org/~ratingscampaign.