Interesting poll. It was a bit flat in my opinion, because it didn't really delve too deep into the subject, but we don't really know what you will do with the results either, so it might serve you well.
Anyways, I did have a little gripe with the questionnaire, question 15.2 asks for your ability in certain languages, it could be me, but I couldn't change the languages that were displayed (it kept saying language 1-5). You might have wanted to have add a comments field as well, just for this kind of case. Not really too major, because you could just tell it at the previous question, but it might be a good idea to make a comment field in the future just for these small things that you might overlook.