I am doing a presentation on the topic of online research tools at the annual meeting of the Western (US) Psychological Association in April, where I will be including information on LimeSurvey. I'm also presenting results from my master's thesis, which was a big success due in no small part to LimeSurvey's Assessments capability.
I am a doctoral student at Claremont Graduate University in California, and I know of several other students in our department successfully using LS for their theses and dissertations.