Did you know that INCOSE has a LinkedIn group? You can post questions or announcements on there.  https://www.linkedin.com/groups/7499834/

This is in addition to the official INCOSE LinkedIn page, which has content from INCOSE Central.  https://www.linkedin.com/company/incose/ 

And, there's a group for the INCOSE Certification Program. Individuals may post on there along with official messages from the Certification leadership. https://www.linkedin.com/groups/6712162/