Feel free to ad film festival links to this list.
FilmFestivals.com Forum
http://www.filmfestivals.com/forum
Studentfilms.com
http://www.studentfilms.com/forums/
Vimeo Festival Forums
https://vimeo.com/forums/festivals_and_contests
FilmFestivals.com Forum
http://www.filmfestivals.com/forum
Studentfilms.com
http://www.studentfilms.com/forums/
Vimeo Festival Forums
https://vimeo.com/forums/festivals_and_contests