To the casual reader, the verb triples on the Yahoo! front page seems correct. But to the grammar nerd, it casts doubt on the writer:
The word cast is a collective noun that can take either a plural or a singular verb. If the members of the cast act as individuals, then cast is considered plural and takes a singular verb. If they act as a unit, the word is singular with a singular verb.
If the cast worked together as a unit, then the word triples is correct, but the pronoun their would be incorrect. It refers to cast, and should be its, which is weird, no?