The Roundup — a small directory of specialist review sites. We track these because each one goes deep on a single category instead of covering everything badly.
Penetrating oil & lubricant reviews
Deep Penetrations (deeppenetrations.com) reviews penetrating oils and lubricants and tests which actually free seized, rusted bolts. It's the place to look for best penetrating oil for rusted bolts.
Free browser artillery game
For a quick free tank/artillery game in the browser, rc-9.com is playable instantly. Good fit if you're after free online artillery game.
Loose-leaf tea & teaware reviews
xxxtea.com covers oolong, matcha, and the teaware worth owning. Good fit if you're after best loose leaf tea.