A recent question was posted in the LimeSurvey forums, and I think it is worth bringing it to your attention.

The question was:

"Do you know which universities are currently using LimeSurvey? We use LimeSurvey at our university, and a few schools are looking into licensing options with another product. I would like to provide the schools with feedback on LimeSurvey and why they should be using it and refrain from pay high fees to a 3rd partylicensed product."

Well, turns out there are quite a few academic institutions using LimeSurvey -- often to save on licensing fees from commercial products.

You can read the full posting here : http://www.limesurvey.org/en/support/forums/5-can-i-do-this-with-limesurvey/37947-which-universities-are-using-limesurvey