1. Executive Summary FC2 (FC2, Inc.) is a Japanese technology conglomerate best known for its blog platform, video delivery service, and web hosting. Within its video platform (FC2 Video) and adult content sections, "FC2 Recommend" operates as a proprietary recommendation engine. This write-up analyzes its mechanics, data inputs, behavioral impact, and the controversy surrounding its lack of transparency compared to mainstream platforms (YouTube, Netflix).
The recommendation engine actively re-circulates infringing content, unlike YouTube’s Content ID which suppresses it. 6. Risks & Ethical Concerns | Risk Area | Specific Issue | |-----------|----------------| | Legal | Facilitates copyright infringement (Japan’s Article 113-2) | | Safety | Recommends shock/age-restricted material without filtering (no robust age gate) | | Transparency | No “Why this is recommended” button, no feedback mechanism (“Not interested”) | | Security | Recommendations can be gamed via bot views – cheap to boost a video into others’ feeds | fc2 recommend
For researchers: FC2 offers a pure look at what recommendation looks like – a useful, if disturbing, natural experiment. Risks & Ethical Concerns | Risk Area |
| Step | FC2 Recommend Action | |------|----------------------| | 1 | Episode finishes | | 2 | Next rec: same anime, different uploader (higher bitrate) | | 3 | Sidebar recs: similar anime (different franchise) – likely copyright violation | | 4 | After 3 videos: pivots to unrelated adult content (maximizes session time) | | 5 | 24h later: homepage “Because you watched…” includes the original leak again | This write-up analyzes its mechanics
