I noticed this discussion has already occurred on Wikipedia:Votes_for_deletion/List_of_spoken_and_sign_languages_beginning_with_the_letter_Y. The outcome was to keep it. However some good suggestions were made which were not followed up on, including moving this page to List of languages by name:Y. I have come to rely on the category pages rather than list pages, but for now i've moved the 'live' language links from the y page to the main list and deleted dead Y links from the main page.