Questions 11 and 12 require an answer, I think you need to adjust your survey because I don't use any of the sites in Q11 and I don't use Object Desktop for Q12 so I have to answer something random.
This goes for all other questions, if they require an answer there should be an option such as "Im not a gamer", "I dont use Object Desktop" etc otherwise your results are going to be pretty much meaningless.
