This is a Google search operator. Normally, Google hides directory listings (the pages that appear when you visit a URL like http://example.com/files/ showing all files and subfolders). However, many misconfigured web servers still expose these indexes to search engines.
The Ultimate Guide to Finding and Streaming High-Quality Cinema
Directly downloading from an open directory is often faster than torrenting because it uses a direct connection to a server rather than a peer-to-peer network. It also allows for pausing and resuming downloads, which isn't always possible with premium file-hosting sites unless you pay for a subscription. About the Movie: Apocalypto (2006)