Well I'm planning to go to university in Finland, and I'd really like to know atleast a little bit of finnish.
Hopefully with many of the courses graduating to beta this week, perhaps many new courses will be started. I think with the high demand for Finnish, it shouldn't be too long until Duolingo gives in to the peer pressure (:
As a Finnish language graduate I would also love to keep up my language skills on DuoLingo and would happily contribute to the course as well.
I totally recommend the Pimsleur Finnish courses. My brother is doing two semesters in Finland, with this course and memrise. He now has received offers to multiple Finnish universities.
Finnish is one of the most frequently requested languages here. There are volunteers who have already offered to make the course, but they are waiting (and us learners with them) for Duolingo to add the course in the incubator. Please upvote this topic, which has probably the most upvotes, to make our request more visible.
In the meantime, you can check out these excellent Finnish lessons that Zzzzz... creates for us.