Just curious.. I believe I read somewhere in one of the forum comments about this and don't recall where.

The "Alternate Title" is for English translation titles, if available for a foreign film and not to be used if the motion picture is English language, but has translated titles created when the movie was shown in a non-English speaking country.

Examples where "Alternate" shouldn't be used:

http://www.45worlds.com/cinema/movie/border-incident

http://www.45worlds.com/cinema/movie/behold-a-pale-horse

http://www.45worlds.com/cinema/movie/carlitos-way