Went to the link and it didn't mention any miles.
I completed the survey, and at the end it said:
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">
Enter your email address here to participate in the Frequent Flyer Programme draw. 20 participants will be picked at random.
</font>
The only identifying info that it sought was an email address... no choice of programs for miles, no frequent flyer numbers...
Any bets on whether I get something for the survey?