Do Students really appreciate online lecture recordings...??

For another paper I was doing some research on how students are using online lecture recordings. I started with asking Google about studies and evaluations on the topic. But, as I had to find out, there are only some primitive evaluations (with a small number of participating students often limited to a spectial course or a single university) as to the satisfaction of the students -- often with 'overwhelming' results (as for advertising the used lecture recording technology...).

Here you may find a few examples (recent evaluations with more than 100 students seem to be rare...):

• Maree Gosper, Margot McNeill, Karen Woo et. al.: Web-based Lecture Recording Technologies: Do Students Learn From Them?, in In. Adelaide: Higher Education Research and Development Society of Australasia, 2007.
  (interesting summary of several surveys down under in Australia with Lectopia/iLectures, more than 10.000 students addressed but only about 800 answered...)


• Marc Krüger: Pädagogische Betrachtungen zu Vortragsaufzeichnungen (eLectures), in i-com, Zeitschrift für interaktive und kooperative Medien, Oldenbourg Wissenschaftsverlag 3 56--60 (2005).
  (first try of a more general study...)

I was not able to find a more general, summarizing report dealing with a variety of scenarios and clustering the results (inluding methodological soundness and decent empirical basis).

So...first thing -- if you know about any study or evaluation (with significant empirical basis), please write a comment with a link to the source (!)
Second -- I know that this will also only be a rather limited and primitive poll -- please fill out the small poll below. Maybe we gain a little bit more insight on student's satisfaction concerning online lecture recordings -- not only restricted to a single course or a single university....