Are you joking? This is about as legitimate as the copper balance bracelets that are only good for parting gullible people with their cash. Maybe placebo is making you feel more relaxed, or maybe your mattress is not firm enough and having a leather mat firms it up just enough for your back to feel better.
You can look at Super Smash Bros Melee for a game that has a competitive scene that has lasted a long time. It's more popular than ever at the moment with no updates or patches.
My old workplace had an alarm we would set at closing time when we left. I was a contact on the list of people to be called when it went off. It went off maybe 10 times while I was there, every time was a false alarm. Sometimes kids bouncing a ball against the window, sometimes strong winds, sometimes a poster falling off the wall...
But then you both need to be in the same spot to use it. I like the idea of being able to sit on opposite sides of a room, or go for a run while using the device.
This works great until it doesn't. Sometimes when you try using the "Share" or "Open In..." buttons, the medium you want to use is not an option. If that's the case, there is no way to manually change it. For example: we have guys who use iPads instead of PCs. When we were first implementing this, we discovered that even though they had Excel for iPad installed, you couldn't open an Excel document attached to an email in Excel. The Open In... dialogue didn't offer Excel as an option. I ended up just using Numbers instead, which brought its own problems (like not fully supporting the .xlsx format).
I know the comment i'm about to make actually follows the rule you just outlined - but it's really about which subreddits you're subscribed to. The general advice I give when introducing someone to the site is to ditch most of the default subreddits and pick ones that relate to things they're already interested in. Small subreddits have really great communities and are still generating useful and interesting conversations.