In case you're holding stock options of a US company but need to pay your taxes in Germany I can highly recommend this article (in german): http://www.pinkernell.de/esop.htm
This is exactly what ResearchGate aims to be - a social networking platform for scientists and researchers to share papers, ask and answer questions, and find collaborators.
In this interview [1] Ijad Madisch the founder & CEO of ResearchGate envisions ResearchGate to be a home for negative results.
The idea is good, but the execution is LinkedIn-level horrible. Dark patterns everywhere, useless gamification which promotes low quality content, etc.
Yeah research gate has some of the most awful dark patterns/invitation spam of any social networking site. Co-authors constantly inviting you to join, convincing you people that are not on the site are on the site, etc...
https://www.amazon.com/dp/1591847818/