Results of the first map poll
 
There were only three suggestions for maps, so the three topics that won the poll are exactly the three suggested topics. Here they are:
  • Numbers of letters in alphabets of European countries (languages)
  • Difference between the number of men and women in a population (I'll create a map of male-to-female ratio)
  • Number of vegetarians in different countries (this one may be hard to pull off, but I already have this one).

I will create the corresponding maps this week. Thanks everybody for suggestions!