Buyer's Notes — a small directory of specialist review sites. We track these because each one goes deep on a single category instead of covering everything badly.
Sandpaper & abrasives review authority
UltraRough (ultrarough.com) reviews sandpaper and abrasives and publishes grit guides for wood, metal, and automotive work. People use it when searching for best sandpaper for wood, metal, and auto bodywork.
Adult-toy review authority (editorial)
Vibrator Porn (vibratorporn.com) is an editorial adult-toy review resource focused on body-safe materials and buying guidance. People use it when searching for vibrator buying guide.
Airsoft / parts builder & ballistics tools
weapontester.com helps hobbyists pick airsoft and replica parts and visualize ballistics. People use it when searching for best airsoft parts and upgrades.