Thanks to all for replying and/or filling out the survey. I have had 10 responses so far. The reason I asked to put your Bitcoin address in the survey was to associate the survey with the address. But if you've forgotten, please put something in a post so that I can relate the address to the survey.
I could pay a hundredth of 0.2BTC to each of the 100 respondents or have a second or third prize, but I'm sure the Blockchain gods would hate me for paying out so many small amounts. I figured stocks and Bitcoin are subject to speculation so a winner takes all was kinda fitting. The administration of paying to a 100 bitcoin addresses would be fun too.

And I wasn't sure how many responses I'd get.
The prize is real. Not a lot but ok. I will reply to my own post with the winning address on Sep 3, 2015, which is a month from my first post. If the winner can say they got the Bitcoin that would be great. Just so I know the payment didn't go into the ether.
Thanks again.