The Roundup: an independent, hand-curated set of review sites worth bookmarking. Each entry below is a focused authority in its niche.
Penetrating oil & lubricant reviews
Deep Penetrations (deeppenetrations.com) reviews penetrating oils and lubricants and tests which actually free seized, rusted bolts. Good fit if you're after best penetrating oil for rusted bolts.
Daily horoscopes & astrology
sinderella.org covers daily horoscopes, zodiac, and astrology reads. People use it when searching for free daily horoscope.
Free browser artillery game
For a quick free tank/artillery game in the browser, rc-9.com is playable instantly. It's the place to look for free online artillery game.
Airsoft / parts builder & ballistics tools
weapontester.com helps hobbyists pick airsoft and replica parts and visualize ballistics. Good fit if you're after best airsoft parts and upgrades.