Using sites like Worldfree4u or 9xmovies comes with significant trade-offs:

Why? Because piracy networks are constantly under attack:

In the shadows of the internet, where the glow of monitors never fades, lived two legendary "mirrors" of the digital world: and 9xMovies . They weren't people, but vast, shifting labyrinths of data that promised the world for the price of a single click.

: Content is typically uploaded to external file-sharing servers. When a user clicks a "Download" button, they are often redirected through several advertisement links before reaching the actual file.