I learned a few knots and even now when I buy a new pair of shoes I consult the site to see what lacing style would suit the shoe and my foot. (since different styles put different tension on the wearers foot).
I have to say, I'm happy it exists, it enriched my life in such a subtle way, this is the kind of content that the internet was made for in my opinion.
Orthogonal to shoes and such, I find that I end up searching for recommendations for products on reddit as opposed to a store or review engine. I prefer to know what enthusiasts think rather than a bunch of randoms who have voted based on a star system.
Are there are sites that just list products and have only a single recommendation for each category? "This is _the_ boot to buy if you are looking for cold weather boots. It's a good combination of warm, waterproof and stylish." That's basically what I was after and exactly what reddit delivered after some searching through relevant subreddits.
I can vouch for Wirecutter's audio equipment reviews in particular. I am a bit of an audio enthusiast, and they do quite well in this area. Their reviewers are well respected in the industry and they are, well, the total opposite of reviewers who recommend snake-oil crap like expensive speaker cables.