Help:How do I communicate on FactGrid?
FactGrid is a Wikibase installation; the software is the same with which Wikidata runs: A MediaWiki (as known from Wikipedia) that also works as a database with a special extension.
Every registered user as a User page and a talk page coming with it
As in Wikipedia, all registered user have their own user pages connected to their personal talk pages. If you leave someone a message on their talk page, they will receive a note the next time their screen is refreshed (or even an e-mail if they have asked for this service in their preferences).
That is the fast way to make sure a person gets your message.
FactGrid Project chat
Use the FactGrid:Project chat to speak to the entire community.
Sign your posts
If you have written something on another User's page or in the FactGrid:Project chat sign your post with --~~~~. When saving, this sequence will be converted into a signature with links to your user and your talk page and a date that matches the date of the version history as in --Olaf Simons (talk) 23:57, 3 April 2020 (CEST)