appears to be a website (or a series of related domains) that offers free streaming and downloading of movies and TV shows. The "HD" in the name suggests a focus on high-definition quality, while "Boss" implies a dominant or superior collection. Typically, such sites aggregate content from various sources, re-encode them, and host them on third-party servers.
: Your Ultimate Destination for HD Movies & Series.
The existence of HDFilmBoss highlights a broader trend in how the internet consumes media outside of the "walled gardens" of paid subscriptions.
