"Pöllö, I love you."
Translation:Pöllö, minä rakastan sinua.
If we're talking about first names only, the problem is that most names are popular only within certain age groups. We've tried to include names from every age group. If only the most popular names in general were included, the older generations would be overrepresented. You can see the most popular first names year by year here. :)
Well, if I read the page correctly - the top 5 popular names for the 1990-2010 birth years are relatively the same. It would be really good to expose them in the lessons so we can have some common knowledge of the popular names. The same goes for surnames - I know that the owl is Duolingo's mascot, but you shouldn't overrepresent it in the relatively tiny Finnish tree.