Share your experience with Sakai

Through an email on one of the lists, i came across this: "It is a great pleasure to send you our warmest greetings from the University of Kagoshima in Kagoshima City, Japan. We have recently launched a world-wide comparative study involving 5 of the most popular open source e-Learning platforms: MOODLE, ATUTOR, ILIAS, CLAROLINE and SAKAI".
You are kindly asked to fill in a questionnaire if you are or have been a user of any of these systems in any of three roles indicated (administrator, teacher, student). Go to
a) Survey for Administrators
http://canberra.ics.kagoshima-u.ac.jp/comp_study_LMS.php
b) Survey for Teachers/Instructors:
http://canberra.ics.kagoshima-u.ac.jp/comp_study_LMS3.php
c) Survey for Students:
http://canberra.ics.kagoshima-u.ac.jp/comp_study_LMS_5.php