inu-kun said:
Filled it, an interesting question, does a game like Pepsi-man or franchise shit on phones (like the simpson's tapping game) can be considered a commercial?
You should probably run the form by your supervisor before going live with it. You're going to have problems with data analysis with the current setup, since there are a number of questions that lack proper responses. An example would be the question about product placement affecting the respondent's view of the game - you can answer "positively", "negatively" or "not sure". There's a good chance the respondent is going to be very sure about the whole thing having no effect at all - but you don't allow that answer, so you've already locked out one conclusion from the start. There is literally no way for you to get the result that people's opinions of games are unaffected by product placement, regardless of how the reality of the situation looks.
Apart from running the form by your supervisor, it would also be a good idea to run a pilot study with a small test group, to make sure the form offers good validity. I would also recommend adding a catch-all question at the end of the form, asking for additional comments, where the respondent can type in whatever he or she wants. This lets the respondents explain what they meant in odd cases, and also lets them forward information about issues you didn't think about before sending out the form.
On a more general note, I would also carefully consider your selection procedure - are you going to get a representative selection of the population you're after from tossing a link out on an internet forum?
Edit: By the way, is this even a good way to measure the effects of product placement? Isn't a sign of good product placement that you don't actually notice it, and that you also don't notice the effect it has on you? Off the top of my head, I'd think a better measure would be to have a group play a game with product placement, and then survey their opinions about the brands involved in a before and after setup.