Despite not knowing much about the topic, I have sometimes ventured to write about Tolkien's invented languages and writing systems.
A shorter collection of similar writings in Finnish can be found at Kirjoituksia Tolkienin kielistä ja kirjoitusjärjestelmistä.
Also available is an English summary for an incomplete Finnish document I once started writing: Writing Finnish in Tengwar.
To my knowledge, two translations of "Are High Elves Finno-Ugric?" are in existence. An Italian translation by Raffaella Benvenuto has been published on the Eldalie.it website. A translation into Polish by Karolina Stopa-Olszanska and Tadeusz A. Olszanski has appeared in Simbelmynë 16 (published in late 2003) and, with corrections, in Aiglos 1 (early 2004). I speak neither of these languages, but it seems clear that both translations have been prepared with much greater care and erudition than the original article. I thank the translators and editors for showing such interest in my writings.
Just in case this page is your first contact to the study and use of Tolkien's languages and scripts, here is a basic set of links to connect you with the rest of the world.
FAQs: The Elfling FAQ answers many basic questions and gives pointers to reliable sources. See also Resources for Tolkienian Linguistics.
Basic online sources: To go straight to the good stuff, try for example Ardalambion and Amanye Tenceli.
Discussion:
Movies: The Gwaith-i-Phethdain movie section analyzes the use of Tolkien's languages in the Peter Jackson films.