Verbs represent the actions that can be taken.
A post (n.) can be: written, shared, deleted, or read.
It's easy to adopt terms that are already in use or to be lazy in choosing our language. But when you're deciding which words to use, it is important to consider the alternatives, perceptions, and associations around each term.
How would your work be different if "authors writing posts" was changed to "researchers authoring papers," or "followers submitting comments?"