I only know it is popular in my neighboring country DE, Xing : https://www.linkedin.com/pulse/xing-german-linkedin-what-why-should-you-use-lars-ruiterkamp/ http

I only know it is popular in my neighboring country DE, Xing : https://www.linkedin.com/pulse/xing-german-linkedin-what-why-should-you-use-lars-ruiterkamp/ https://www.linkedin.com/pulse/xing-german-linkedin-what-why...