IMDB data has serious licensing restrictions. I would be extremely surprised if it were used as a source for this.
It would be surprising to see any suit to enforce the licensing restrictions on a database built from user contributions like IMDB actually go to trial.
We might come away with some interesting answers to the questions of what licensing terms on such databases are truly enforceable (as opposed to mere intimidation).
What happened to that Craigslist lawsuit? How is that progressing?