We always had the problem of putting Slovenia in one of the slots. If you ask me it's in Central Europe, but historically we ware always put in the Eastern part (but that probably has more to do with politics than geography).
Have the same issue with Poland. We need this damn Central Europe category so we can escape the dreaded "Eastern Europe" badge... And since we are in no way Western, Central is the only way. </sarcasm>
Unless we speak colloquially, then there's an infinite number of groups to qualify. The OP should use some reference to choose categories ( http://news.ycombinator.com/item?id=2147290 ), his are a bit strange and subjective.
It has no official significance, just a common term, and your link proves my point. I'm from Poland and by Larousse we're not central, by Brittanica we are.
For this survey it would be nice if we had a finer granularity. It would be interesting to see where the most HN users sit in Europe. Western, eastern and "other" Europe for a population of 700+ million people is rather sub optimal.
Compare that to the amount of options for the US with its 220 mio population.
