Of the ten websites listed on the first page of results, only 2 of them are actual reviews of the movie "Source Code". One is a RottenTomatoes listing of Source Code reviews.
The other 7 are basically garbage, keyword stuffing, and spam meant to work their way into the "Source Code Movie Review" keyword without actually providing any kind of review of the film. The first two listings don't even contain any content and are the very definition of "thin content". They not only don't have a review of the film, they don't really have anything on their pages at all.
So only 3/10 results there are useful at all and most of the first results are completely useless thin content. Two weeks ago, at least 4/10 (if not more) would have been good content which actually related to the keyword, since our review would have been on that page.