...Why are you using an external, exploitable and editable platform- when you have a biased response to the poll you've created?...
Edit: ...
A follow-up poll should not be conducted on an external medium, as mentioned above.
The forum poll is just as exploitable, if you can create multiple emails you can create multiple forum accounts. I have it setup to limit one response.
Beyond that, it relies on the same trust factor that the forum poll inherently uses. I could have set the option to record email addresses, but that informs the person that they are being recorded. This would negate the attempt to make it non-exploitable, as the exploiters can easily adapt to make themselves blend in more.
Someone might say that the forum poll is better because it shows the name and ties it to a profile with more information than an email address. To which I would argue that the forums are brand new, the game isn't out yet, and players interested for any reason may create a profile and the first thing they do is vote in a poll. Which provides no "other" data when referring to their profile to help determine if they are using it for distorting results.
However being able to view the data collected as charts and with finer details via google sheet (automatic input), this external form allows for more depth when analyzing results. For Instance if we see 10 results in a five minute period of time that has all the same answers, it may support the analysts' reasoning to conclude that 9/10 of those results are from the same person-- That is not my concern, FB can analyze however they wish, if at all; I'm merely collecting the information.
In addition, read
this and
that.