When it comes to videos showing electrical work, roofing, or other trades; I look for tattoos and such.

If the guy in the video is hard to understand, has a bunch of tats, is filming it poorly in his backyard with wind in his mic, has a cigarette hanging out of his mouth; you’re probably getting good advice because he does this shit for a living.

The guy in a neatly ironed polo shirt with a corporate logo, slick video with animations, nice background: that guy has no fucking clue what he’s talking about.