I’ve recently come across dokku, which is a great solution to build your own mini-Heroku version. It’s super useful and easy to manage many apps without any limitations—a feature of Heroku’s free plan.
I use LinkedIn. I have over 2500 connections. Admittedly, 500 or so are from the less glamorous times when I added anyone and everyone who wanted to be added without any discretion on my end. But most connections are actual people that I “know.