Each term or so we ask our students to complete a survey created using Feedback. Each course on Moodle (700+) adds in via a template the pre-prepared questions. It is our preferred solution due to folexibility and ease of use.
The problem is that while the results of the Feedback are visible within the course, the survey is a cross-college survey and as such we need the results of the Feedback to be available as a whole (as well as being available for each course). So, if 10 courses get 10 users take a Feedback activity, somewhere is an option (maybe with an appropriate cabability) to see all 100 results together, with pretty graphs etc.
Our current solution is to query the feedback tables in the database directly, looking for instances of a specific activity's title, and produce a custom-built page of textual results. This page has no graphs and is not something which could easily be ported to other Moodles (id-specific user authentication and such), as well as repeating all the text in the questions, so if the questions change (which they inevitably will) the code needs changing too.
taken from Forum thread here: http://moodle.org/mod/forum/discuss.php?d=116549