No real comment about the guild market voting, it won't change the fact that nothing really matches the value of the guild coin in time, effort and resources anymore.
As for the `survey' , Until they stop asking for personal details in a supposedly `anonymous' survey which they would not need, for any meaningful game experience survey. My advise has always been don't do it! Your information is valuable, that's why they want it.. wrapping in up in some meaningless survey of your `valuable opinion'... is just that, wrapping. Apart from that how many of these surveys actually ask the right questions? Do they want to hear how bad they are at game programming, balancing, and maintenance....? Or do they always ask and/or push you to an incomplete answer they `want' to hear...? Like I said meaningless...Don't do it.