I have no idea what this is, but I'm a huge fan. The reign of Linkedin as de-facto standard has to end. It's unacceptable recruiters expect me to have a profile

I have no idea what this is, but I'm a huge fan. The reign of Linkedin as de-facto standard has to end. It's unacceptable recruiters expect me to have a profile on some proprietary website. Luckily not everyone is a moron and it's not a blocker in getting a job, but I still hate people asking me about it.